From d06cab167cc32acf6d90b0bd4024d3bcd9f9a7bf Mon Sep 17 00:00:00 2001
From: Javinator9889 <javialonso007@hotmail.es>
Date: Tue, 19 Jun 2018 19:12:36 +0200
Subject: [PATCH] Updated CQL model

---
 App/.idea/App.iml                             |  14 +
 App/.idea/misc.xml                            |   7 +
 App/.idea/modules.xml                         |   8 +
 App/.idea/workspace.xml                       | 276 +++++++++++++
 Design/DB_STRUCTURE/Logical.svg               |  33 +-
 Design/DB_STRUCTURE/Relational.svg            | 381 ++++++++++--------
 .../database_design/dmd_open.local            |   2 +-
 .../database_design/logical/Objects.local     |   2 +
 .../B1A287E6-50CA-DB8B-0AAD-60C303A2A402.xml  |  73 ++++
 .../B934A368-41CA-2247-7505-4DDD707ADAB7.xml  |  19 +
 .../2C149101-C988-9E4D-2C9E-2746FB965570.xml  |  13 +
 ...RMC5DFC5DD-35E9-B422-B2BF-B7648E7DE99B.xml |  14 +
 .../rel/C5DFC5DD-B7648E7DE99B/Objects.local   |   2 +
 .../51EE3780-3B5D-E1A1-65B0-7ED699DD5948.xml  |  17 +
 .../DDF9FCBE-2830-5AB6-3DD0-B2CFAA840673.xml  |  49 ++-
 .../1243C675-86A2-977F-2EFA-8F6C72D2CB26.xml  |  88 ++++
 Design/DB_STRUCTURE/db_script.cql             |   8 +
 17 files changed, 828 insertions(+), 178 deletions(-)
 create mode 100644 App/.idea/App.iml
 create mode 100644 App/.idea/misc.xml
 create mode 100644 App/.idea/modules.xml
 create mode 100644 App/.idea/workspace.xml
 create mode 100644 Design/DB_STRUCTURE/database_design/logical/entity/seg_0/B1A287E6-50CA-DB8B-0AAD-60C303A2A402.xml
 create mode 100644 Design/DB_STRUCTURE/database_design/logical/relation/seg_0/B934A368-41CA-2247-7505-4DDD707ADAB7.xml
 create mode 100644 Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/foreignkey/seg_0/51EE3780-3B5D-E1A1-65B0-7ED699DD5948.xml
 create mode 100644 Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/table/seg_0/1243C675-86A2-977F-2EFA-8F6C72D2CB26.xml

diff --git a/App/.idea/App.iml b/App/.idea/App.iml
new file mode 100644
index 0000000..b5835e7
--- /dev/null
+++ b/App/.idea/App.iml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="PackageRequirementsSettings">
+    <option name="requirementsPath" value="E:\Nextcloud\Programming\YouTubeMDBot\App\requirements.txt" />
+  </component>
+  <component name="TestRunnerService">
+    <option name="PROJECT_TEST_RUNNER" value="Unittests" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/App/.idea/misc.xml b/App/.idea/misc.xml
new file mode 100644
index 0000000..9cebf05
--- /dev/null
+++ b/App/.idea/misc.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.6.1 (C:\Users\Javier Alonso Silva\AppData\Local\Programs\Python\Python36\python.exe)" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/App/.idea/modules.xml b/App/.idea/modules.xml
new file mode 100644
index 0000000..cc95f4e
--- /dev/null
+++ b/App/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/App.iml" filepath="$PROJECT_DIR$/.idea/App.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/App/.idea/workspace.xml b/App/.idea/workspace.xml
new file mode 100644
index 0000000..22b08a0
--- /dev/null
+++ b/App/.idea/workspace.xml
@@ -0,0 +1,276 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="ecb85847-acff-4336-b3d7-4f5563aac01d" name="Default" comment="" />
+    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="TRACKING_ENABLED" value="true" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="CoverageDataManager">
+    <SUITE FILE_PATH="coverage/App$application.coverage" NAME="application Coverage Results" MODIFIED="1529336246883" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$" />
+  </component>
+  <component name="FileEditorManager">
+    <leaf>
+      <file leaf-file-name="application.py" pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/application.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="204">
+              <caret line="22" column="28" lean-forward="true" selection-start-line="22" selection-start-column="28" selection-end-line="22" selection-end-column="28" />
+              <folding>
+                <element signature="e#0#46#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="__init__.py" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/upgrader/__init__.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="170">
+              <caret line="10" selection-start-line="10" selection-end-line="10" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="__init__.py" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/out/__init__.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="374">
+              <caret line="22" selection-start-line="22" selection-end-line="22" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Setup Script" />
+        <option value="Python Script" />
+      </list>
+    </option>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/.." />
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/out/__init__.py" />
+        <option value="$PROJECT_DIR$/requirements.txt" />
+        <option value="$PROJECT_DIR$/upgrader/__init__.py" />
+        <option value="$PROJECT_DIR$/application.py" />
+      </list>
+    </option>
+  </component>
+  <component name="JsBuildToolGruntFileManager" detection-done="true" sorting="DEFINITION_ORDER" />
+  <component name="JsBuildToolPackageJson" detection-done="true" sorting="DEFINITION_ORDER" />
+  <component name="JsGulpfileManager">
+    <detection-done>true</detection-done>
+    <sorting>DEFINITION_ORDER</sorting>
+  </component>
+  <component name="NodePackageJsonFileManager">
+    <packageJsonPaths />
+  </component>
+  <component name="ProjectFrameBounds" extendedState="6">
+    <option name="x" value="-8" />
+    <option name="width" value="977" />
+    <option name="height" value="1038" />
+  </component>
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true">
+    <ConfirmationsSetting value="2" id="Add" />
+  </component>
+  <component name="ProjectView">
+    <navigator proportions="" version="1">
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <pane id="ProjectPane">
+        <subPane>
+          <expand>
+            <path>
+              <item name="App" type="b2602c69:ProjectViewProjectNode" />
+              <item name="App" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="App" type="b2602c69:ProjectViewProjectNode" />
+              <item name="App" type="462c0819:PsiDirectoryNode" />
+              <item name="out" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="App" type="b2602c69:ProjectViewProjectNode" />
+              <item name="App" type="462c0819:PsiDirectoryNode" />
+              <item name="upgrader" type="462c0819:PsiDirectoryNode" />
+            </path>
+          </expand>
+          <select />
+        </subPane>
+      </pane>
+      <pane id="Scope" />
+    </panes>
+  </component>
+  <component name="PropertiesComponent">
+    <property name="WebServerToolWindowFactoryState" value="true" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/requirements.txt" />
+    <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
+    <property name="nodejs_npm_path_reset_for_default_project" value="true" />
+    <property name="settings.editor.selected.configurable" value="com.jetbrains.python.configuration.PyIntegratedToolsModulesConfigurable" />
+  </component>
+  <component name="RunDashboard">
+    <option name="ruleStates">
+      <list>
+        <RuleState>
+          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
+        </RuleState>
+        <RuleState>
+          <option name="name" value="StatusDashboardGroupingRule" />
+        </RuleState>
+      </list>
+    </option>
+  </component>
+  <component name="RunManager">
+    <configuration name="application" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <module name="App" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/application.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Python.application" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SvnConfiguration">
+    <configuration />
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="ecb85847-acff-4336-b3d7-4f5563aac01d" name="Default" comment="" />
+      <created>1529335044449</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1529335044449</updated>
+    </task>
+    <task id="LOCAL-00001" summary="First commit of the application - created methods for main and first setup">
+      <created>1529336000478</created>
+      <option name="number" value="00001" />
+      <option name="presentableId" value="LOCAL-00001" />
+      <option name="project" value="LOCAL" />
+      <updated>1529336000478</updated>
+    </task>
+    <task id="LOCAL-00002" summary="Packages and cPrint method - pip upgrader also included">
+      <created>1529341560151</created>
+      <option name="number" value="00002" />
+      <option name="presentableId" value="LOCAL-00002" />
+      <option name="project" value="LOCAL" />
+      <updated>1529341560151</updated>
+    </task>
+    <option name="localTasksCounter" value="3" />
+    <servers />
+  </component>
+  <component name="ToolWindowManager">
+    <frame x="-7" y="-7" width="1550" height="838" extended-state="6" />
+    <editor active="true" />
+    <layout>
+      <window_info anchor="bottom" id="TODO" order="12" />
+      <window_info anchor="bottom" id="Event Log" order="3" side_tool="true" />
+      <window_info anchor="bottom" id="Database Changes" order="2" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Run" order="8" weight="0.32965517" />
+      <window_info anchor="bottom" id="Version Control" order="1" />
+      <window_info anchor="bottom" id="Python Console" order="5" />
+      <window_info anchor="bottom" id="Terminal" order="4" />
+      <window_info anchor="right" id="Remote Host" order="2" />
+      <window_info active="true" content_ui="combo" id="Project" order="1" visible="true" weight="0.26367188" />
+      <window_info anchor="bottom" id="Docker" order="0" show_stripe_button="false" />
+      <window_info anchor="right" id="Database" order="0" />
+      <window_info anchor="right" id="SciView" order="1" />
+      <window_info id="Structure" order="2" side_tool="true" weight="0.25" />
+      <window_info anchor="bottom" id="Debug" order="9" weight="0.4" />
+      <window_info id="Favorites" order="0" side_tool="true" />
+      <window_info anchor="bottom" id="Find" order="7" />
+      <window_info anchor="right" id="Commander" order="3" weight="0.4" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="5" weight="0.25" />
+      <window_info anchor="bottom" id="Inspection" order="11" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Message" order="6" />
+      <window_info anchor="bottom" id="Cvs" order="10" weight="0.25" />
+    </layout>
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="1" />
+  </component>
+  <component name="VcsContentAnnotationSettings">
+    <option name="myLimit" value="2678400000" />
+  </component>
+  <component name="VcsManagerConfiguration">
+    <MESSAGE value="First commit of the application - created methods for main and first setup" />
+    <MESSAGE value="Packages and cPrint method - pip upgrader also included" />
+    <option name="LAST_COMMIT_MESSAGE" value="Packages and cPrint method - pip upgrader also included" />
+  </component>
+  <component name="XDebuggerManager">
+    <breakpoint-manager>
+      <option name="time" value="1" />
+    </breakpoint-manager>
+  </component>
+  <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/app_data.dict">
+      <provider selected="true" editor-type-id="text-editor">
+        <state>
+          <caret column="38" lean-forward="true" selection-start-column="38" selection-end-column="38" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/setup.py">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/requirements.txt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="17">
+          <caret line="1" column="19" selection-start-line="1" selection-start-column="19" selection-end-line="1" selection-end-column="19" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/out/__init__.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="374">
+          <caret line="22" selection-start-line="22" selection-end-line="22" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/upgrader/__init__.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="170">
+          <caret line="10" selection-start-line="10" selection-end-line="10" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/application.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="204">
+          <caret line="22" column="28" lean-forward="true" selection-start-line="22" selection-start-column="28" selection-end-line="22" selection-end-column="28" />
+          <folding>
+            <element signature="e#0#46#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+  </component>
+</project>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/Logical.svg b/Design/DB_STRUCTURE/Logical.svg
index b71957c..5457059 100644
--- a/Design/DB_STRUCTURE/Logical.svg
+++ b/Design/DB_STRUCTURE/Logical.svg
@@ -31,6 +31,9 @@
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath3_0_">
 <rect x="0" y="0" width="170" height="110" />
 </clipPath>
+<clipPath clipPathUnits="userSpaceOnUse" id="clipPath6_0_">
+<rect x="0" y="0" width="170" height="110" />
+</clipPath>
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath5_0_">
 <rect x="0" y="0" width="170" height="110" />
 </clipPath>
@@ -49,6 +52,10 @@
 <path stroke="rgb(0,0,0)" fill="none" stroke-opacity="1.0"  stroke-width="1" d="M578 345 L526 345" />
 </g>
 <g stroke-linecap="butt" >
+<path stroke="rgb(0,0,0)" fill="none" stroke-opacity="1.0"  stroke-dasharray="8,8" stroke-width="1" d="M302 85 L255 85" />
+<path stroke="rgb(0,0,0)" fill="none" stroke-opacity="1.0"  stroke-width="1" d="M209 85 L255 85" />
+</g>
+<g stroke-linecap="butt" >
 <path stroke="rgb(0,0,0)" fill="none" stroke-opacity="1.0"  stroke-dasharray="8,8" stroke-width="1" d="M472 85 L532 85" />
 <path stroke="rgb(0,0,0)" fill="none" stroke-opacity="1.0"  stroke-width="1" d="M592 85 L532 85" />
 </g>
@@ -145,7 +152,7 @@ o
 times_requested
 </text>
 </g>
-<g  fill="rgb(164,225,255)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath5_0_)" transform="translate(302,31)" >
+<g  fill="rgb(164,225,255)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath6_0_)" transform="translate(302,31)" >
 <rect x="0" y="0" width="169" height="109" rx="20" ry="20" />
 <text id="User" x="73" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
 User
@@ -217,5 +224,29 @@ o
 is_metadata_by_user
 </text>
 </g>
+<g  fill="rgb(164,225,255)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath5_0_)" transform="translate(39,29)" >
+<rect x="0" y="0" width="169" height="109" rx="20" ry="20" />
+<text id="Statistics" x="62" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+Statistics
+</text>
+<text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+o
+</text>
+<text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+lang
+</text>
+<text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+o
+</text>
+<text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+downloads
+</text>
+<text x="16" y="60" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+o
+</text>
+<text x="26" y="60" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+last_time_active
+</text>
+</g>
 
 </svg>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/Relational.svg b/Design/DB_STRUCTURE/Relational.svg
index 60d4873..38d8ff8 100644
--- a/Design/DB_STRUCTURE/Relational.svg
+++ b/Design/DB_STRUCTURE/Relational.svg
@@ -1,5 +1,5 @@
 
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1"  width="967" height="553">
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1"  width="1108" height="535">
 <defs id="dmw_defs" >
 <svg id="fk_sym" viewBox="0 0 48.665 48.665" style="enable-background:new 0 0 48.665 48.665;" >
 <g>
@@ -23,128 +23,152 @@
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 </svg>
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath4_0_">
-<rect x="0" y="0" width="251" height="110" />
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 </clipPath>
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath7_0_">
-<rect x="0" y="0" width="205" height="110" />
+<rect x="0" y="0" width="235" height="127" />
+</clipPath>
+<clipPath clipPathUnits="userSpaceOnUse" id="clipPath8_0_">
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 </clipPath>
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath3_0_">
-<rect x="0" y="0" width="265" height="132" />
+<rect x="0" y="0" width="266" height="127" />
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 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath6_0_">
-<rect x="0" y="0" width="257" height="138" />
+<rect x="0" y="0" width="263" height="139" />
 </clipPath>
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath2_0_">
-<rect x="0" y="0" width="227" height="138" />
+<rect x="0" y="0" width="233" height="137" />
 </clipPath>
 <clipPath clipPathUnits="userSpaceOnUse" id="clipPath1_0_">
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+<rect x="0" y="0" width="234" height="118" />
 </clipPath>
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-<polygon stroke="rgb(0,0,0)" stroke-dasharray="none" points="472 141 477 145 473 147" fill="rgb(0,0,0)" stroke-width="1" stroke-opacity="1.0"  />
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+<polygon stroke="rgb(0,0,0)" stroke-dasharray="none" points="262 240 259 234 265 234" fill="rgb(0,0,0)" stroke-width="1" stroke-opacity="1.0"  />
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 </g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath2_0_)" transform="translate(740,40)" >
-<rect x="0" y="0" width="226" height="137" />
-<text id="Metadata" x="91" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
-Metadata
+<g stroke-linecap="butt" >
+<path stroke="rgb(0,0,0)" fill="none" stroke-opacity="1.0"  stroke-width="1" d="M794 467 L845 467" />
+<polygon stroke="rgb(0,0,0)" stroke-dasharray="none" points="794 467 800 464 800 470" fill="rgb(0,0,0)" stroke-width="1" stroke-opacity="1.0"  />
+</g>
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath4_0_)" transform="translate(4,390)" >
+<rect x="0" y="0" width="252" height="109" />
+<text id="Playlist" x="108" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+Playlist
 </text>
-<line x1="0" y1="18" x2="225" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="18" x2="251" y2="18" fill="none" stroke="rgb(0,0,255)"/>
 <text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-
+*
+</text>
+<text x="2" y="32" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
+P
 </text>
 <text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-title
+playlist_id
 </text>
-<text x="110" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<text x="131" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 VARCHAR2 (256 CHAR)
 </text>
 <text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 
 </text>
 <text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-artist
+number_elements
 </text>
-<text x="110" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-VARCHAR2 (256 CHAR)
+<text x="131" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+INTEGER
 </text>
 <text x="16" y="60" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 
 </text>
 <text x="26" y="60" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-cover
-</text>
-<text x="110" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-CLOB
+times_requested
 </text>
-<text x="16" y="74" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-
+<text x="131" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+INTEGER
 </text>
-<text x="26" y="74" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-duration
+<line x1="0" y1="66" x2="251" y2="66" fill="none" stroke="rgb(0,0,255)"/>
+<use xlink:href="#pk_sym" x="4" y="73" width="8" height="8" fill-opacity="1.0"/>
+<text x="16" y="80" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Playlist_PK (playlist_id)
 </text>
-<text x="110" y="74" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-VARCHAR2 (20 CHAR)
+</g>
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath8_0_)" transform="translate(590,412)" >
+<rect x="0" y="0" width="203" height="109" />
+<text id="User" x="90" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+User
 </text>
-<text x="16" y="88" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<line x1="0" y1="18" x2="202" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 *
 </text>
-<text x="2" y="88" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-F
+<text x="2" y="32" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
+P
 </text>
-<text x="26" y="88" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Music_file_id
+<text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+user_id
 </text>
-<text x="110" y="88" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-VARCHAR2 (256 CHAR)
+<text x="92" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+INTEGER
 </text>
-<line x1="0" y1="94" x2="225" y2="94" fill="none" stroke="rgb(0,0,255)"/>
-<use xlink:href="#fk_sym" x="4" y="101" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#Music" >
-<text x="16" y="108" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Metadata_Music_FK (Music_file_id)
-</text></a>
-<line x1="0" y1="114" x2="225" y2="114" fill="none" stroke="rgb(0,0,255)"/>
-<text x="2" y="128" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-U
+<text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+
 </text>
-<text x="16" y="128" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Metadata__IDX (Music_file_id)
+<text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+username
+</text>
+<text x="92" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+VARCHAR2 (45 CHAR)
+</text>
+<text x="16" y="60" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+
+</text>
+<text x="26" y="60" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+name
+</text>
+<text x="92" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+CLOB
+</text>
+<line x1="0" y1="66" x2="202" y2="66" fill="none" stroke="rgb(0,0,255)"/>
+<use xlink:href="#pk_sym" x="4" y="73" width="8" height="8" fill-opacity="1.0"/>
+<text x="16" y="80" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+User_PK (user_id)
 </text>
 </g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath3_0_)" transform="translate(382,38)" >
-<rect x="0" y="0" width="264" height="131" />
-<text id="Music" x="117" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath3_0_)" transform="translate(217,240)" >
+<rect x="0" y="0" width="265" height="126" />
+<text id="Music" x="118" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
 Music
 </text>
-<line x1="0" y1="18" x2="263" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="18" x2="264" y2="18" fill="none" stroke="rgb(0,0,255)"/>
 <text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 *
 </text>
@@ -202,60 +226,63 @@ is_metadata_by_user
 <text x="146" y="102" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 CHAR (1)
 </text>
-<line x1="0" y1="108" x2="263" y2="108" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="108" x2="264" y2="108" fill="none" stroke="rgb(0,0,255)"/>
 <use xlink:href="#pk_sym" x="4" y="115" width="8" height="8" fill-opacity="1.0"/>
 <text x="16" y="122" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 Music_PK (file_id)
 </text>
 </g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath4_0_)" transform="translate(42,289)" >
-<rect x="0" y="0" width="250" height="109" />
-<text id="Playlist" x="107" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
-Playlist
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath5_0_)" transform="translate(2,30)" >
+<rect x="0" y="0" width="305" height="111" />
+<text id="Playlist_has_Music" x="105" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+Playlist_has_Music
 </text>
-<line x1="0" y1="18" x2="249" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="18" x2="304" y2="18" fill="none" stroke="rgb(0,0,255)"/>
 <text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 *
 </text>
 <text x="2" y="32" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
-P
+PF
 </text>
 <text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-playlist_id
+Playlist_playlist_id
 </text>
-<text x="131" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<text x="134" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 VARCHAR2 (256 CHAR)
 </text>
 <text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-
-</text>
-<text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-number_elements
-</text>
-<text x="131" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-INTEGER
+*
 </text>
-<text x="16" y="60" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-
+<text x="2" y="46" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
+PF
 </text>
-<text x="26" y="60" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-times_requested
+<text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Music_file_id
 </text>
-<text x="131" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-INTEGER
+<text x="134" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+VARCHAR2 (256 CHAR)
 </text>
-<line x1="0" y1="66" x2="249" y2="66" fill="none" stroke="rgb(0,0,255)"/>
-<use xlink:href="#pk_sym" x="4" y="73" width="8" height="8" fill-opacity="1.0"/>
-<text x="16" y="80" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Playlist_PK (playlist_id)
+<line x1="0" y1="52" x2="304" y2="52" fill="none" stroke="rgb(0,0,255)"/>
+<use xlink:href="#pk_sym" x="4" y="59" width="8" height="8" fill-opacity="1.0"/>
+<text x="16" y="66" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Playlist_has_Music_PK (Playlist_playlist_id, Music_file_id)
 </text>
+<line x1="0" y1="72" x2="304" y2="72" fill="none" stroke="rgb(0,0,255)"/>
+<use xlink:href="#fk_sym" x="4" y="79" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#Playlist" >
+<text x="16" y="86" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Playlist_has_Music_Playlist_FK (Playlist_playlist_id)
+</text></a>
+<use xlink:href="#fk_sym" x="4" y="93" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#Music" >
+<text x="16" y="100" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Playlist_has_Music_Music_FK (Music_file_id)
+</text></a>
 </g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath6_0_)" transform="translate(677,415)" >
-<rect x="0" y="0" width="256" height="137" />
-<text id="Preferences" x="98" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath6_0_)" transform="translate(845,396)" >
+<rect x="0" y="0" width="262" height="138" />
+<text id="Preferences" x="101" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
 Preferences
 </text>
-<line x1="0" y1="18" x2="255" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="18" x2="261" y2="18" fill="none" stroke="rgb(0,0,255)"/>
 <text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 
 </text>
@@ -304,12 +331,12 @@ User_user_id
 <text x="148" y="88" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 INTEGER
 </text>
-<line x1="0" y1="94" x2="255" y2="94" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="94" x2="261" y2="94" fill="none" stroke="rgb(0,0,255)"/>
 <use xlink:href="#fk_sym" x="4" y="101" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#User" >
 <text x="16" y="108" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 Preferences_User_FK (User_user_id)
 </text></a>
-<line x1="0" y1="114" x2="255" y2="114" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="114" x2="261" y2="114" fill="none" stroke="rgb(0,0,255)"/>
 <text x="2" y="128" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 U
 </text>
@@ -317,99 +344,79 @@ U
 Preferences__IDX (User_user_id)
 </text>
 </g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath7_0_)" transform="translate(402,426)" >
-<rect x="0" y="0" width="204" height="109" />
-<text id="User" x="91" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
-User
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath2_0_)" transform="translate(333,25)" >
+<rect x="0" y="0" width="232" height="136" />
+<text id="Metadata" x="94" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+Metadata
 </text>
-<line x1="0" y1="18" x2="203" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="18" x2="231" y2="18" fill="none" stroke="rgb(0,0,255)"/>
 <text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-*
-</text>
-<text x="2" y="32" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
-P
+
 </text>
 <text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-user_id
+title
 </text>
-<text x="92" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-INTEGER
+<text x="110" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+VARCHAR2 (256 CHAR)
 </text>
 <text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 
 </text>
 <text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-username
+artist
 </text>
-<text x="92" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-VARCHAR2 (45 CHAR)
+<text x="110" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+VARCHAR2 (256 CHAR)
 </text>
 <text x="16" y="60" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 
 </text>
 <text x="26" y="60" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-name
+cover
 </text>
-<text x="92" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<text x="110" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 CLOB
 </text>
-<line x1="0" y1="66" x2="203" y2="66" fill="none" stroke="rgb(0,0,255)"/>
-<use xlink:href="#pk_sym" x="4" y="73" width="8" height="8" fill-opacity="1.0"/>
-<text x="16" y="80" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-User_PK (user_id)
-</text>
-</g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath5_0_)" transform="translate(2,30)" >
-<rect x="0" y="0" width="305" height="111" />
-<text id="Playlist_has_Music" x="105" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
-Playlist_has_Music
-</text>
-<line x1="0" y1="18" x2="304" y2="18" fill="none" stroke="rgb(0,0,255)"/>
-<text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-*
-</text>
-<text x="2" y="32" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
-PF
+<text x="16" y="74" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+
 </text>
-<text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Playlist_playlist_id
+<text x="26" y="74" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+duration
 </text>
-<text x="134" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
-VARCHAR2 (256 CHAR)
+<text x="110" y="74" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+VARCHAR2 (20 CHAR)
 </text>
-<text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<text x="16" y="88" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 *
 </text>
-<text x="2" y="46" fill="rgb(0,0,255)" fill-opacity="1.0" font-size="10" stroke="none">
-PF
+<text x="2" y="88" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+F
 </text>
-<text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<text x="26" y="88" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 Music_file_id
 </text>
-<text x="134" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+<text x="110" y="88" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 VARCHAR2 (256 CHAR)
 </text>
-<line x1="0" y1="52" x2="304" y2="52" fill="none" stroke="rgb(0,0,255)"/>
-<use xlink:href="#pk_sym" x="4" y="59" width="8" height="8" fill-opacity="1.0"/>
-<text x="16" y="66" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Playlist_has_Music_PK (Playlist_playlist_id, Music_file_id)
-</text>
-<line x1="0" y1="72" x2="304" y2="72" fill="none" stroke="rgb(0,0,255)"/>
-<use xlink:href="#fk_sym" x="4" y="79" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#Playlist" >
-<text x="16" y="86" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Playlist_has_Music_Playlist_FK (Playlist_playlist_id)
-</text></a>
-<use xlink:href="#fk_sym" x="4" y="93" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#Music" >
-<text x="16" y="100" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
-Playlist_has_Music_Music_FK (Music_file_id)
+<line x1="0" y1="94" x2="231" y2="94" fill="none" stroke="rgb(0,0,255)"/>
+<use xlink:href="#fk_sym" x="4" y="101" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#Music" >
+<text x="16" y="108" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Metadata_Music_FK (Music_file_id)
 </text></a>
+<line x1="0" y1="114" x2="231" y2="114" fill="none" stroke="rgb(0,0,255)"/>
+<text x="2" y="128" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+U
+</text>
+<text x="16" y="128" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Metadata__IDX (Music_file_id)
+</text>
 </g>
-<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath1_0_)" transform="translate(396,238)" >
-<rect x="0" y="0" width="234" height="117" />
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath1_0_)" transform="translate(578,227)" >
+<rect x="0" y="0" width="233" height="117" />
 <text id="History" x="100" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
 History
 </text>
-<line x1="0" y1="18" x2="233" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="18" x2="232" y2="18" fill="none" stroke="rgb(0,0,255)"/>
 <text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 *
 </text>
@@ -434,12 +441,12 @@ Music_file_id
 <text x="110" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
 VARCHAR2 (256 CHAR)
 </text>
-<line x1="0" y1="52" x2="233" y2="52" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="52" x2="232" y2="52" fill="none" stroke="rgb(0,0,255)"/>
 <use xlink:href="#pk_sym" x="4" y="59" width="8" height="8" fill-opacity="1.0"/>
 <text x="16" y="66" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 History_PK (User_user_id, Music_file_id)
 </text>
-<line x1="0" y1="72" x2="233" y2="72" fill="none" stroke="rgb(0,0,255)"/>
+<line x1="0" y1="72" x2="232" y2="72" fill="none" stroke="rgb(0,0,255)"/>
 <use xlink:href="#fk_sym" x="4" y="79" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#User" >
 <text x="16" y="86" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
 History_User_FK (User_user_id)
@@ -449,5 +456,63 @@ History_User_FK (User_user_id)
 History_Music_FK (Music_file_id)
 </text></a>
 </g>
+<g  fill="rgb(255,255,180)" stroke="rgb(0,0,255)" fill-opacity="1.0" stroke-opacity="1.0" clip-path="url(#clipPath7_0_)" transform="translate(284,402)" >
+<rect x="0" y="0" width="234" height="126" />
+<text id="Statistics" x="94" y="14" fill="rgb(0,0,255)" font-weight="bold"  fill-opacity="1.0" font-size="10" stroke="none">
+Statistics
+</text>
+<line x1="0" y1="18" x2="233" y2="18" fill="none" stroke="rgb(0,0,255)"/>
+<text x="16" y="32" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+
+</text>
+<text x="26" y="32" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+lang
+</text>
+<text x="124" y="32" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+VARCHAR2 (5 CHAR)
+</text>
+<text x="16" y="46" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+
+</text>
+<text x="26" y="46" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+downloads
+</text>
+<text x="124" y="46" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+INTEGER
+</text>
+<text x="16" y="60" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+
+</text>
+<text x="26" y="60" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+last_time_active
+</text>
+<text x="124" y="60" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+DATE
+</text>
+<text x="16" y="74" fill="rgb(255,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+*
+</text>
+<text x="2" y="74" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+F
+</text>
+<text x="26" y="74" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+User_user_id
+</text>
+<text x="124" y="74" fill="rgb(0,128,0)" fill-opacity="1.0" font-size="10" stroke="none">
+INTEGER
+</text>
+<line x1="0" y1="80" x2="233" y2="80" fill="none" stroke="rgb(0,0,255)"/>
+<use xlink:href="#fk_sym" x="4" y="87" width="8" height="8" fill-opacity="1.0"/><a xlink:href="#User" >
+<text x="16" y="94" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Statistics_User_FK (User_user_id)
+</text></a>
+<line x1="0" y1="100" x2="233" y2="100" fill="none" stroke="rgb(0,0,255)"/>
+<text x="2" y="114" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+U
+</text>
+<text x="16" y="114" fill="rgb(0,0,0)" fill-opacity="1.0" font-size="10" stroke="none">
+Statistics__IDX (User_user_id)
+</text>
+</g>
 
 </svg>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/database_design/dmd_open.local b/Design/DB_STRUCTURE/database_design/dmd_open.local
index 19659b5..ed28034 100644
--- a/Design/DB_STRUCTURE/database_design/dmd_open.local
+++ b/Design/DB_STRUCTURE/database_design/dmd_open.local
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <design id="3C168D0F-3177-9281-C715-B5AB03BB32C4">
 	<models>
-		<model id="351C3A3B-985F-1B54-60FE-A46161E8F350" open="true" open_d_pm="false"/>
+		<model id="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" open="true" open_d_pm="false"/>
 	</models>
 </design>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/database_design/logical/Objects.local b/Design/DB_STRUCTURE/database_design/logical/Objects.local
index 2113cad..da73ab3 100644
--- a/Design/DB_STRUCTURE/database_design/logical/Objects.local
+++ b/Design/DB_STRUCTURE/database_design/logical/Objects.local
@@ -4,7 +4,9 @@
    <object objectType="Entity" objectID="FB782D70-50E0-0A98-4654-5E94050F8458" name="Music" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Entity" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="" propertyTargetId=""/>
    <object objectType="Entity" objectID="52FEBBBF-C76E-AEF4-45C5-3341E59BD946" name="Playlist" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Entity" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="" propertyTargetId=""/>
    <object objectType="Entity" objectID="312E0255-FAA7-1630-54E5-A4FCB50F6276" name="Preferences" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Entity" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="" propertyTargetId=""/>
+   <object objectType="Entity" objectID="B1A287E6-50CA-DB8B-0AAD-60C303A2A402" name="Statistics" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Entity" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="" propertyTargetId=""/>
    <object objectType="Entity" objectID="96125017-F1D2-153D-CBAC-D12E0939CF4E" name="User" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Entity" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="" propertyTargetId=""/>
+   <object objectType="Relation" objectID="B934A368-41CA-2247-7505-4DDD707ADAB7" name="creates" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Relation" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="96125017-F1D2-153D-CBAC-D12E0939CF4E" propertyTargetId="B1A287E6-50CA-DB8B-0AAD-60C303A2A402"/>
    <object objectType="Relation" objectID="46906DFA-66DD-2DD5-790C-7A87FFE7755C" name="has" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Relation" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="FB782D70-50E0-0A98-4654-5E94050F8458" propertyTargetId="1558C95F-4CEC-1E30-AA15-58B7C6ACD81B"/>
    <object objectType="Relation" objectID="DDBAFE8B-B820-1773-EE96-8B363262CAA9" name="History" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Relation" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="96125017-F1D2-153D-CBAC-D12E0939CF4E" propertyTargetId="FB782D70-50E0-0A98-4654-5E94050F8458"/>
    <object objectType="Relation" objectID="1D1B52B1-8974-5046-5AB7-7AB4BF89C08A" name="Playlist_has_Music" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.logical.Relation" propertyParentId="6F505A55-3C56-E65E-61AB-E3E34318876E" propertySourceId="52FEBBBF-C76E-AEF4-45C5-3341E59BD946" propertyTargetId="FB782D70-50E0-0A98-4654-5E94050F8458"/>
diff --git a/Design/DB_STRUCTURE/database_design/logical/entity/seg_0/B1A287E6-50CA-DB8B-0AAD-60C303A2A402.xml b/Design/DB_STRUCTURE/database_design/logical/entity/seg_0/B1A287E6-50CA-DB8B-0AAD-60C303A2A402.xml
new file mode 100644
index 0000000..8497d69
--- /dev/null
+++ b/Design/DB_STRUCTURE/database_design/logical/entity/seg_0/B1A287E6-50CA-DB8B-0AAD-60C303A2A402.xml
@@ -0,0 +1,73 @@
+<?xml version = '1.0' encoding = 'UTF-8'?>
+<Entity class="oracle.dbtools.crest.model.design.logical.Entity" directorySegmentName="seg_0" id="B1A287E6-50CA-DB8B-0AAD-60C303A2A402" name="Statistics">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:05:14 UTC</createdTime>
+<ownerDesignName>database_design</ownerDesignName>
+<engineerTo>
+<item key="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" value="true"/>
+</engineerTo>
+<adequatelyNormalized>NO</adequatelyNormalized>
+<expectedVolumes>0</expectedVolumes>
+<fwdEngineeringStrategyName>Single Table</fwdEngineeringStrategyName>
+<growthPercent>0</growthPercent>
+<growthType>Year</growthType>
+<maxVolumes>9999999</maxVolumes>
+<minVolumes>0</minVolumes>
+<normalForm>Third</normalForm>
+<attributes itemClass="oracle.dbtools.crest.model.design.logical.Attribute">
+<Attribute name="lang" id="89D674D7-31F9-D93D-73E0-665EFF65C20A">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:05:22 UTC</createdTime>
+<ownerDesignName>database_design</ownerDesignName>
+<engineerTo>
+<item key="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" value="true"/>
+</engineerTo>
+<nullsAllowed>true</nullsAllowed>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT024</logicalDatatype>
+<dataTypeSize>5 CHAR</dataTypeSize>
+<ownDataTypeParameters>5 CHAR,,</ownDataTypeParameters>
+</Attribute>
+<Attribute name="downloads" id="19C812C7-2829-FCC6-7AB0-8EF0080E3DF5">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:05:36 UTC</createdTime>
+<ownerDesignName>database_design</ownerDesignName>
+<engineerTo>
+<item key="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" value="true"/>
+</engineerTo>
+<nullsAllowed>true</nullsAllowed>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT011</logicalDatatype>
+<ownDataTypeParameters>,,</ownDataTypeParameters>
+</Attribute>
+<Attribute name="last_time_active" id="E22158FC-409E-A487-CC46-78530525C255">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:05:55 UTC</createdTime>
+<ownerDesignName>database_design</ownerDesignName>
+<engineerTo>
+<item key="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" value="true"/>
+</engineerTo>
+<nullsAllowed>true</nullsAllowed>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT007</logicalDatatype>
+<ownDataTypeParameters>,,</ownDataTypeParameters>
+</Attribute>
+<Attribute name="user_id" id="0C4521CC-B720-4EEA-EF48-2AB477F192BB">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:24 UTC</createdTime>
+<generatorID>B934A368-41CA-2247-7505-4DDD707ADAB7</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<engineerTo>
+<item key="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" value="true"/>
+</engineerTo>
+<referedAttribute>8775EFB1-2319-5282-E470-92105C133D68</referedAttribute>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT011</logicalDatatype>
+<ownDataTypeParameters>,,</ownDataTypeParameters>
+</Attribute>
+</attributes>
+</Entity>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/database_design/logical/relation/seg_0/B934A368-41CA-2247-7505-4DDD707ADAB7.xml b/Design/DB_STRUCTURE/database_design/logical/relation/seg_0/B934A368-41CA-2247-7505-4DDD707ADAB7.xml
new file mode 100644
index 0000000..0360a03
--- /dev/null
+++ b/Design/DB_STRUCTURE/database_design/logical/relation/seg_0/B934A368-41CA-2247-7505-4DDD707ADAB7.xml
@@ -0,0 +1,19 @@
+<?xml version = '1.0' encoding = 'UTF-8'?>
+<Relation class="oracle.dbtools.crest.model.design.logical.Relation" name="creates" directorySegmentName="seg_0" id="B934A368-41CA-2247-7505-4DDD707ADAB7">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:24 UTC</createdTime>
+<ownerDesignName>database_design</ownerDesignName>
+<engineerTo>
+<item key="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" value="true"/>
+</engineerTo>
+<sourcePk>3E09607E-650C-5E05-C7AC-0E839F482CA2</sourcePk>
+<identifying>false</identifying>
+<optionalSource>true</optionalSource>
+<optionalTarget>false</optionalTarget>
+<sourceCardinality>1</sourceCardinality>
+<sourceEntity>96125017-F1D2-153D-CBAC-D12E0939CF4E</sourceEntity>
+<targetCardinalityString>1</targetCardinalityString>
+<targetEntity>B1A287E6-50CA-DB8B-0AAD-60C303A2A402</targetEntity>
+<transferable>true</transferable>
+<deleteRule>CASCADE</deleteRule>
+</Relation>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/database_design/logical/subviews/2C149101-C988-9E4D-2C9E-2746FB965570.xml b/Design/DB_STRUCTURE/database_design/logical/subviews/2C149101-C988-9E4D-2C9E-2746FB965570.xml
index 79d56d6..e32299d 100644
--- a/Design/DB_STRUCTURE/database_design/logical/subviews/2C149101-C988-9E4D-2C9E-2746FB965570.xml
+++ b/Design/DB_STRUCTURE/database_design/logical/subviews/2C149101-C988-9E4D-2C9E-2746FB965570.xml
@@ -30,6 +30,10 @@
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
 <bounds x="302" y="31" width="170" height="110"/>
 </OView>
+<OView class="oracle.dbtools.crest.swingui.logical.TVEntity" oid="B1A287E6-50CA-DB8B-0AAD-60C303A2A402" otype="Entity" vid="EE7AA86C-0E64-4679-3D34-63E13C0F2168">
+<hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
+<bounds x="39" y="29" width="170" height="110"/>
+</OView>
 <OView class="oracle.dbtools.crest.swingui.logical.TVEntity" oid="FB782D70-50E0-0A98-4654-5E94050F8458" otype="Entity" vid="6228CAAB-3F20-C75A-DB18-93B20B112ABE">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
 <bounds x="305" y="287" width="170" height="110"/>
@@ -54,6 +58,15 @@
 <point x="578" y="345"/>
 </points>
 </Connector>
+<Connector class="oracle.dbtools.crest.swingui.logical.TVRelation" oid="B934A368-41CA-2247-7505-4DDD707ADAB7" otype="Relation" vid_source="1835A4EB-FF4E-AE49-E18C-B55630335F66" vid_target="EE7AA86C-0E64-4679-3D34-63E13C0F2168">
+<hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
+<backgroundColor>-16777216</backgroundColor>
+<lineWidth>1</lineWidth>
+<points>
+<point x="302" y="85"/>
+<point x="209" y="85"/>
+</points>
+</Connector>
 <Connector class="oracle.dbtools.crest.swingui.logical.TVRelation" oid="C49FD692-24A0-3030-2280-A4D5B8CDFC01" otype="Relation" vid_source="1835A4EB-FF4E-AE49-E18C-B55630335F66" vid_target="753E8511-1D46-AB9A-60AD-1FBB71C19E3D">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
 <backgroundColor>-16777216</backgroundColor>
diff --git a/Design/DB_STRUCTURE/database_design/mapping/ExtendedMap_RMC5DFC5DD-35E9-B422-B2BF-B7648E7DE99B.xml b/Design/DB_STRUCTURE/database_design/mapping/ExtendedMap_RMC5DFC5DD-35E9-B422-B2BF-B7648E7DE99B.xml
index a53c215..2fabce5 100644
--- a/Design/DB_STRUCTURE/database_design/mapping/ExtendedMap_RMC5DFC5DD-35E9-B422-B2BF-B7648E7DE99B.xml
+++ b/Design/DB_STRUCTURE/database_design/mapping/ExtendedMap_RMC5DFC5DD-35E9-B422-B2BF-B7648E7DE99B.xml
@@ -57,6 +57,18 @@
 </Mg>
 </containedMappings>
 </CM>
+<CM id="B1A287E6-60C303A2A4021243C675-8F6C72D2CB26" lID="B1A287E6-50CA-DB8B-0AAD-60C303A2A402" lT="0" rID="1243C675-86A2-977F-2EFA-8F6C72D2CB26" rT="4">
+<containedMappings itemClass="oracle.dbtools.crest.model.xtdmapping.RelMapping">
+<Mg id="0C4521CC-2AB477F192BB44652E9D-F466221E35AD" lID="0C4521CC-B720-4EEA-EF48-2AB477F192BB" rID="44652E9D-2CE9-68CD-D636-F466221E35AD">
+</Mg>
+<Mg id="19C812C7-8EF0080E3DF576E36E0B-E931F34CB950" lID="19C812C7-2829-FCC6-7AB0-8EF0080E3DF5" rID="76E36E0B-3F39-720B-E5E1-E931F34CB950">
+</Mg>
+<Mg id="89D674D7-665EFF65C20A71506711-2BCCAC05A576" lID="89D674D7-31F9-D93D-73E0-665EFF65C20A" rID="71506711-481D-6C32-6A24-2BCCAC05A576">
+</Mg>
+<Mg id="E22158FC-78530525C25575598DA3-F3AF8FF1AB59" lID="E22158FC-409E-A487-CC46-78530525C255" rID="75598DA3-6766-33A1-6645-F3AF8FF1AB59">
+</Mg>
+</containedMappings>
+</CM>
 <CM id="DDBAFE8B-8B363262CAA9F0AD5A40-595FD0DB5F39" lID="DDBAFE8B-B820-1773-EE96-8B363262CAA9" lT="3" rID="F0AD5A40-5659-C806-BEA1-595FD0DB5F39" rT="4" rSEnt="96125017-F1D2-153D-CBAC-D12E0939CF4E" rTEnt="FB782D70-50E0-0A98-4654-5E94050F8458">
 </CM>
 <CM id="FB782D70-5E94050F845825DE0936-9EAA1E0DA843" lID="FB782D70-50E0-0A98-4654-5E94050F8458" lT="0" rID="25DE0936-5106-79A2-1678-9EAA1E0DA843" rT="4">
@@ -80,6 +92,8 @@
 </CM>
 <CM id="46906DFA-7A87FFE7755C6A45C1C6-BA841A05B730" lID="46906DFA-66DD-2DD5-790C-7A87FFE7755C" lT="3" rID="6A45C1C6-8C3B-317C-9221-BA841A05B730" rT="8" rSEnt="FB782D70-50E0-0A98-4654-5E94050F8458" rTEnt="1558C95F-4CEC-1E30-AA15-58B7C6ACD81B">
 </CM>
+<CM id="B934A368-4DDD707ADAB751EE3780-7ED699DD5948" lID="B934A368-41CA-2247-7505-4DDD707ADAB7" lT="3" rID="51EE3780-3B5D-E1A1-65B0-7ED699DD5948" rT="8" rSEnt="96125017-F1D2-153D-CBAC-D12E0939CF4E" rTEnt="B1A287E6-50CA-DB8B-0AAD-60C303A2A402">
+</CM>
 <CM id="C49FD692-A4D5B8CDFC01C7DC4550-5E37D6D8832D" lID="C49FD692-24A0-3030-2280-A4D5B8CDFC01" lT="3" rID="C7DC4550-6D2C-B38B-5C23-5E37D6D8832D" rT="8" rSEnt="96125017-F1D2-153D-CBAC-D12E0939CF4E" rTEnt="312E0255-FAA7-1630-54E5-A4FCB50F6276">
 </CM>
 </mappings>
diff --git a/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/Objects.local b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/Objects.local
index 581f249..afb34a8 100644
--- a/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/Objects.local
+++ b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/Objects.local
@@ -6,6 +6,7 @@
    <object objectType="Table" objectID="0AF231FE-3CA2-BFD0-E42B-0DFDC72D4D26" name="Playlist" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.relational.Table" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="" propertyTargetId=""/>
    <object objectType="Table" objectID="47A181FD-9D20-6987-2EAE-0B7F53C88FB3" name="Playlist_has_Music" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.relational.Table" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="" propertyTargetId=""/>
    <object objectType="Table" objectID="D088A558-CA22-9A96-F938-4F7712E4AEF1" name="Preferences" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.relational.Table" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="" propertyTargetId=""/>
+   <object objectType="Table" objectID="1243C675-86A2-977F-2EFA-8F6C72D2CB26" name="Statistics" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.relational.Table" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="" propertyTargetId=""/>
    <object objectType="Table" objectID="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" name="User" seqName="seg_0" propertyClassName="oracle.dbtools.crest.model.design.relational.Table" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="" propertyTargetId=""/>
    <object objectType="FKIndexAssociation" objectID="14761BF2-0284-F09E-1C36-5AD59C18B84E" name="History_Music_FK" seqName="seg_0" containerID="F0AD5A40-5659-C806-BEA1-595FD0DB5F39" refContainerID="25DE0936-5106-79A2-1678-9EAA1E0DA843" propertyClassName="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="25DE0936-5106-79A2-1678-9EAA1E0DA843" propertyTargetId="F0AD5A40-5659-C806-BEA1-595FD0DB5F39"/>
    <object objectType="FKIndexAssociation" objectID="6AA622A5-D308-C63C-2AF6-730CF06EBF34" name="History_User_FK" seqName="seg_0" containerID="F0AD5A40-5659-C806-BEA1-595FD0DB5F39" refContainerID="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" propertyClassName="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" propertyTargetId="F0AD5A40-5659-C806-BEA1-595FD0DB5F39"/>
@@ -13,4 +14,5 @@
    <object objectType="FKIndexAssociation" objectID="B59DC6EC-C75B-86D4-AFA3-705630B49873" name="Playlist_has_Music_Music_FK" seqName="seg_0" containerID="47A181FD-9D20-6987-2EAE-0B7F53C88FB3" refContainerID="25DE0936-5106-79A2-1678-9EAA1E0DA843" propertyClassName="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="25DE0936-5106-79A2-1678-9EAA1E0DA843" propertyTargetId="47A181FD-9D20-6987-2EAE-0B7F53C88FB3"/>
    <object objectType="FKIndexAssociation" objectID="518E00B2-30C8-083A-0841-D61034BE188E" name="Playlist_has_Music_Playlist_FK" seqName="seg_0" containerID="47A181FD-9D20-6987-2EAE-0B7F53C88FB3" refContainerID="0AF231FE-3CA2-BFD0-E42B-0DFDC72D4D26" propertyClassName="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="0AF231FE-3CA2-BFD0-E42B-0DFDC72D4D26" propertyTargetId="47A181FD-9D20-6987-2EAE-0B7F53C88FB3"/>
    <object objectType="FKIndexAssociation" objectID="C7DC4550-6D2C-B38B-5C23-5E37D6D8832D" name="Preferences_User_FK" seqName="seg_0" containerID="D088A558-CA22-9A96-F938-4F7712E4AEF1" refContainerID="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" propertyClassName="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" propertyTargetId="D088A558-CA22-9A96-F938-4F7712E4AEF1"/>
+   <object objectType="FKIndexAssociation" objectID="51EE3780-3B5D-E1A1-65B0-7ED699DD5948" name="Statistics_User_FK" seqName="seg_0" containerID="1243C675-86A2-977F-2EFA-8F6C72D2CB26" refContainerID="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" propertyClassName="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" propertyParentId="C5DFC5DD-35E9-B422-B2BF-B7648E7DE99B" propertySourceId="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" propertyTargetId="1243C675-86A2-977F-2EFA-8F6C72D2CB26"/>
 </oracle.dbtools.crest.model.design.relational.RelationalDesign>
diff --git a/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/foreignkey/seg_0/51EE3780-3B5D-E1A1-65B0-7ED699DD5948.xml b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/foreignkey/seg_0/51EE3780-3B5D-E1A1-65B0-7ED699DD5948.xml
new file mode 100644
index 0000000..10d5e7a
--- /dev/null
+++ b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/foreignkey/seg_0/51EE3780-3B5D-E1A1-65B0-7ED699DD5948.xml
@@ -0,0 +1,17 @@
+<?xml version = '1.0' encoding = 'UTF-8'?>
+<FKIndexAssociation class="oracle.dbtools.crest.model.design.relational.FKIndexAssociation" directorySegmentName="seg_0" id="51EE3780-3B5D-E1A1-65B0-7ED699DD5948" containerWithKeyObject="1243C675-86A2-977F-2EFA-8F6C72D2CB26" localFKIndex="F4D0C2D4-6598-EAB3-C5B6-B3A1428D7822" name="Statistics_User_FK">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>B934A368-41CA-2247-7505-4DDD707ADAB7</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<referredTableLongName>User</referredTableLongName>
+<deleteRule>CASCADE</deleteRule>
+<referredTableID>175D64CD-6D93-E0AE-DD13-FF75CAB2DC92</referredTableID>
+<keyObject>D02538CD-C7A9-1C9E-7706-9BD9CDCB8B5D</keyObject>
+<referredKeyID>D02538CD-C7A9-1C9E-7706-9BD9CDCB8B5D</referredKeyID>
+<mandatory>true</mandatory>
+<refColNames>user_id</refColNames>
+<transferable>true</transferable>
+<rely>false</rely>
+<columnDependencyConstraintGenerateInDDL>true</columnDependencyConstraintGenerateInDDL>
+</FKIndexAssociation>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/subviews/DDF9FCBE-2830-5AB6-3DD0-B2CFAA840673.xml b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/subviews/DDF9FCBE-2830-5AB6-3DD0-B2CFAA840673.xml
index f612e0b..c4652da 100644
--- a/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/subviews/DDF9FCBE-2830-5AB6-3DD0-B2CFAA840673.xml
+++ b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/subviews/DDF9FCBE-2830-5AB6-3DD0-B2CFAA840673.xml
@@ -16,15 +16,19 @@
 <objectViews>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="0AF231FE-3CA2-BFD0-E42B-0DFDC72D4D26" otype="Table" vid="EE21C7FE-C85E-5A2F-1C78-65A01371BC3B">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
-<bounds x="42" y="289" width="251" height="110"/>
+<bounds x="4" y="390" width="253" height="110"/>
+</OView>
+<OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="1243C675-86A2-977F-2EFA-8F6C72D2CB26" otype="Table" vid="96F7DC31-5392-F6F5-90A9-53BD7AAFBAD7">
+<hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
+<bounds x="284" y="402" width="235" height="127"/>
 </OView>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="175D64CD-6D93-E0AE-DD13-FF75CAB2DC92" otype="Table" vid="D2EC0BC0-F700-1329-2716-2C21984B5622">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
-<bounds x="402" y="426" width="205" height="110"/>
+<bounds x="590" y="412" width="204" height="110"/>
 </OView>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="25DE0936-5106-79A2-1678-9EAA1E0DA843" otype="Table" vid="2EF161ED-9225-9235-FB82-8D46B46E7C99">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
-<bounds x="382" y="38" width="265" height="132"/>
+<bounds x="217" y="240" width="266" height="127"/>
 </OView>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="47A181FD-9D20-6987-2EAE-0B7F53C88FB3" otype="Table" vid="44FE6C73-9DC7-1AD1-9776-430C14CF03AD">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
@@ -32,15 +36,15 @@
 </OView>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="D088A558-CA22-9A96-F938-4F7712E4AEF1" otype="Table" vid="A05D5803-ED8E-B325-BEA5-C740A63CE2DF">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
-<bounds x="677" y="415" width="257" height="138"/>
+<bounds x="845" y="396" width="263" height="139"/>
 </OView>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="D1128F38-5763-FC3D-4FB1-14F78EDBE4CB" otype="Table" vid="D81A6E47-E007-9797-50BE-F7FF859B5323">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
-<bounds x="740" y="40" width="227" height="138"/>
+<bounds x="333" y="25" width="233" height="137"/>
 </OView>
 <OView class="oracle.dbtools.crest.swingui.relational.TVTable" oid="F0AD5A40-5659-C806-BEA1-595FD0DB5F39" otype="Table" vid="CA7E6911-92B6-3662-B80D-2237D96C2937">
 <hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
-<bounds x="396" y="238" width="235" height="118"/>
+<bounds x="578" y="227" width="234" height="118"/>
 </OView>
 </objectViews>
 <connectors>
@@ -49,8 +53,8 @@
 <backgroundColor>-16777216</backgroundColor>
 <lineWidth>1</lineWidth>
 <points>
-<point x="498" y="170"/>
-<point x="498" y="238"/>
+<point x="483" y="307"/>
+<point x="578" y="307"/>
 </points>
 </Connector>
 <Connector class="oracle.dbtools.crest.swingui.relational.TVFKRelation" oid="518E00B2-30C8-083A-0841-D61034BE188E" otype="FKIndexAssociation" vid_source="EE21C7FE-C85E-5A2F-1C78-65A01371BC3B" vid_target="44FE6C73-9DC7-1AD1-9776-430C14CF03AD">
@@ -58,8 +62,17 @@
 <backgroundColor>-16777216</backgroundColor>
 <lineWidth>1</lineWidth>
 <points>
-<point x="167" y="289"/>
-<point x="167" y="142"/>
+<point x="130" y="390"/>
+<point x="130" y="142"/>
+</points>
+</Connector>
+<Connector class="oracle.dbtools.crest.swingui.relational.TVFKRelation" oid="51EE3780-3B5D-E1A1-65B0-7ED699DD5948" otype="FKIndexAssociation" vid_source="D2EC0BC0-F700-1329-2716-2C21984B5622" vid_target="96F7DC31-5392-F6F5-90A9-53BD7AAFBAD7">
+<hideElementsInCurrentOnly>false</hideElementsInCurrentOnly>
+<backgroundColor>-16777216</backgroundColor>
+<lineWidth>1</lineWidth>
+<points>
+<point x="590" y="467"/>
+<point x="519" y="467"/>
 </points>
 </Connector>
 <Connector class="oracle.dbtools.crest.swingui.relational.TVFKRelation" oid="6A45C1C6-8C3B-317C-9221-BA841A05B730" otype="FKIndexAssociation" vid_source="2EF161ED-9225-9235-FB82-8D46B46E7C99" vid_target="D81A6E47-E007-9797-50BE-F7FF859B5323">
@@ -67,8 +80,8 @@
 <backgroundColor>-16777216</backgroundColor>
 <lineWidth>1</lineWidth>
 <points>
-<point x="647" y="105"/>
-<point x="740" y="105"/>
+<point x="408" y="240"/>
+<point x="408" y="162"/>
 </points>
 </Connector>
 <Connector class="oracle.dbtools.crest.swingui.relational.TVFKRelation" oid="6AA622A5-D308-C63C-2AF6-730CF06EBF34" otype="FKIndexAssociation" vid_source="D2EC0BC0-F700-1329-2716-2C21984B5622" vid_target="CA7E6911-92B6-3662-B80D-2237D96C2937">
@@ -76,8 +89,8 @@
 <backgroundColor>-16777216</backgroundColor>
 <lineWidth>1</lineWidth>
 <points>
-<point x="504" y="426"/>
-<point x="504" y="356"/>
+<point x="692" y="412"/>
+<point x="692" y="345"/>
 </points>
 </Connector>
 <Connector class="oracle.dbtools.crest.swingui.relational.TVFKRelation" oid="B59DC6EC-C75B-86D4-AFA3-705630B49873" otype="FKIndexAssociation" vid_source="2EF161ED-9225-9235-FB82-8D46B46E7C99" vid_target="44FE6C73-9DC7-1AD1-9776-430C14CF03AD">
@@ -85,8 +98,8 @@
 <backgroundColor>-16777216</backgroundColor>
 <lineWidth>1</lineWidth>
 <points>
-<point x="382" y="90"/>
-<point x="308" y="90"/>
+<point x="262" y="240"/>
+<point x="262" y="142"/>
 </points>
 </Connector>
 <Connector class="oracle.dbtools.crest.swingui.relational.TVFKRelation" oid="C7DC4550-6D2C-B38B-5C23-5E37D6D8832D" otype="FKIndexAssociation" vid_source="D2EC0BC0-F700-1329-2716-2C21984B5622" vid_target="A05D5803-ED8E-B325-BEA5-C740A63CE2DF">
@@ -94,8 +107,8 @@
 <backgroundColor>-16777216</backgroundColor>
 <lineWidth>1</lineWidth>
 <points>
-<point x="472" y="141"/>
-<point x="677" y="481"/>
+<point x="794" y="467"/>
+<point x="845" y="467"/>
 </points>
 </Connector>
 </connectors>
diff --git a/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/table/seg_0/1243C675-86A2-977F-2EFA-8F6C72D2CB26.xml b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/table/seg_0/1243C675-86A2-977F-2EFA-8F6C72D2CB26.xml
new file mode 100644
index 0000000..a756e91
--- /dev/null
+++ b/Design/DB_STRUCTURE/database_design/rel/C5DFC5DD-B7648E7DE99B/table/seg_0/1243C675-86A2-977F-2EFA-8F6C72D2CB26.xml
@@ -0,0 +1,88 @@
+<?xml version = '1.0' encoding = 'UTF-8'?>
+<Table class="oracle.dbtools.crest.model.design.relational.Table" directorySegmentName="seg_0" id="1243C675-86A2-977F-2EFA-8F6C72D2CB26" name="Statistics">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>B1A287E6-50CA-DB8B-0AAD-60C303A2A402</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<allowColumnReorder>false</allowColumnReorder>
+<existDependencyGenerateInDDl>true</existDependencyGenerateInDDl>
+<parsed>true</parsed>
+<columns itemClass="oracle.dbtools.crest.model.design.relational.Column">
+<Column name="lang" id="71506711-481D-6C32-6A24-2BCCAC05A576">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>89D674D7-31F9-D93D-73E0-665EFF65C20A</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<nullsAllowed>true</nullsAllowed>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT024</logicalDatatype>
+<dataTypeSize>5 CHAR</dataTypeSize>
+<ownDataTypeParameters>5 CHAR,,</ownDataTypeParameters>
+<autoIncrementCycle>false</autoIncrementCycle>
+</Column>
+<Column name="downloads" id="76E36E0B-3F39-720B-E5E1-E931F34CB950">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>19C812C7-2829-FCC6-7AB0-8EF0080E3DF5</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<nullsAllowed>true</nullsAllowed>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT011</logicalDatatype>
+<ownDataTypeParameters>,,</ownDataTypeParameters>
+<autoIncrementCycle>false</autoIncrementCycle>
+</Column>
+<Column name="last_time_active" id="75598DA3-6766-33A1-6645-F3AF8FF1AB59">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>E22158FC-409E-A487-CC46-78530525C255</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<nullsAllowed>true</nullsAllowed>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT007</logicalDatatype>
+<ownDataTypeParameters>,,</ownDataTypeParameters>
+<autoIncrementCycle>false</autoIncrementCycle>
+</Column>
+<Column name="User_user_id" id="44652E9D-2CE9-68CD-D636-F466221E35AD">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>0C4521CC-B720-4EEA-EF48-2AB477F192BB</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<useDomainConstraints>false</useDomainConstraints>
+<use>1</use>
+<logicalDatatype>LOGDT011</logicalDatatype>
+<ownDataTypeParameters>,,</ownDataTypeParameters>
+<previousColumn>false</previousColumn>
+<autoIncrementCycle>false</autoIncrementCycle>
+<associations>
+<colAssociation fkAssociation="51EE3780-3B5D-E1A1-65B0-7ED699DD5948" referredColumn="7794EE2F-2CCF-4261-4CE3-DF17DC38EB8E"/>
+</associations>
+</Column>
+</columns>
+<indexes itemClass="oracle.dbtools.crest.model.design.relational.Index">
+<ind_PK_UK id="B01BAEC5-2ADC-175D-E1E6-96B4E3DAA8EE" name="Statistics__IDX">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<ownerDesignName>database_design</ownerDesignName>
+<indexState>Unique Plain Index</indexState>
+<isSurrogateKey>false</isSurrogateKey>
+<relationGeneratorID>B934A368-41CA-2247-7505-4DDD707ADAB7</relationGeneratorID>
+<indexColumnUsage>
+<colUsage columnID="44652E9D-2CE9-68CD-D636-F466221E35AD"/>
+</indexColumnUsage>
+</ind_PK_UK>
+<ind_PK_UK id="F4D0C2D4-6598-EAB3-C5B6-B3A1428D7822" name="Statistics_User_FK">
+<createdBy>Javier Alonso Silva</createdBy>
+<createdTime>2018-06-19 17:07:52 UTC</createdTime>
+<generatorID>B934A368-41CA-2247-7505-4DDD707ADAB7</generatorID>
+<ownerDesignName>database_design</ownerDesignName>
+<indexState>Foreign Key</indexState>
+<isSurrogateKey>false</isSurrogateKey>
+<indexColumnUsage>
+<colUsage columnID="44652E9D-2CE9-68CD-D636-F466221E35AD"/>
+</indexColumnUsage>
+</ind_PK_UK>
+</indexes>
+</Table>
\ No newline at end of file
diff --git a/Design/DB_STRUCTURE/db_script.cql b/Design/DB_STRUCTURE/db_script.cql
index 759ed1f..4aa0547 100644
--- a/Design/DB_STRUCTURE/db_script.cql
+++ b/Design/DB_STRUCTURE/db_script.cql
@@ -49,3 +49,11 @@ CREATE TABLE IF NOT EXISTS "User" (
     name       TEXT,
     PRIMARY KEY (user_id)
 );
+
+CREATE TABLE IF NOT EXISTS Statistics (
+    lang                VARCHAR2(5 CHAR),
+    downloads           INT,
+    last_time_active    DATE,
+    user_id             INT NOT NULL,
+    PRIMARY KEY (user_id)
+)
\ No newline at end of file