DotNet Entity Framework Core Sample

Entity Framework (EF) Core is a lightweight, extensible, open source and cross-platform version of the popular Entity Framework data access technology.

EF Core can serve as an object-relational mapper (O/RM), which:

• Enables .NET developers to work with a database using .NET objects.
• Eliminates the need for most of the data-access code that typically needs to be written.

EF Core supports many database engines, see Database Providers for details.

Entity Framework development approaches:

• Code First
• Code First - Fluent API
• Database First
• Model First

Entity Framework Development Approach Decision

Entity Framework development approaches in .NET Core

Feature	Code First	Code First - Fluent API	Database First	Model First
Definition	Create a database from the model, and then add data to the database.	Create a database from the model, and then add data to the database. ModelBuilder class acts as a Fluent API.	Creating entity & context classes for an existing database.	Create a new model using the Entity Framework Designer and then generate a database schema from the model.
Suitable Application	Greenfield / Brownfield	Greenfield	Brownfield	Greenfield
Application Size	Small	Small	Large	Small / Medium
Data Intensity	No	No	Yes	No
Version Control	Yes	Yes	No	Yes
GUI	No	No	Yes	Yes (Slow / Laggy)
Code Development	Ease	Ease	Moderate	Moderate
DB Maintenance	Moderate	Moderate	Ease	Bit Hard (Laggy GUI)
Query Data	LINQ	LINQ	LINQ / Stored Procedure	LINQ

Language : C#
.Net Version : >=6.0

Pre-Requisites

• Visual Studio IDE
• Microsoft SQL Server
• Azure Data Studio / SQL Server Management Studio (SSMS) / SSDT for Visual Studio
  

Scenario

• Database with tables:
  • Departments (Departments data like Name, IsActive)
  • Employees (Employee data like Name, Email, Phone, DepartmentId, IsActive)
  • Skills (Skills data like Name, IsActive)
  • EmployeeSkills (Relation Mapping between Employee and Skill)
• Each Employee belongs to a department and can have multiple skills.

Execution & Implementation Steps

Code First Sample - DotNet Entity Framework Core Code First

Code First Fluent API Sample - DotNet Entity Framework Core Code First Fluent API

Database First Sample - DotNet Entity Framework Core Database First

Model First Sample - DotNet Entity Framework Core Model First

References

EntityFrameworkCore
Entity Framework Core Tutorial
EF Core and EF6
.Net Core MVC
EFCore - Get Started

🔥 Happy Coding