This presentation provides an overview of Entity Framework. Entity Framework is an object-relational mapping framework that allows developers to access and manage relational data using domain-specific objects. It supports three main approaches: model first, where the database model is designed first; code first, where classes are created and then used to generate the database; and database first, where an existing database is used to generate the entity framework model. Some advantages of Entity Framework include reduced development time, the ability to work with an object model independent of the physical database schema, and language-integrated query support.

1. Entity Framework
This presentation tells you :
Basics of Entity Framework

2. What is EF?
• Entity framework is an Object/Relational Mapping (O/RM)
framework. It is an enhancement to ADO.NET that gives developers
an automated mechanism for accessing & storing the data in the
database and working with the results in addition to Data Reader and
Dataset.

3. What is O/RM?
• ORM is a tool for storing data from domain objects to relational
database like MS SQL Server in an automated way without much
programming.

4. Different approaches of EF
• a) Model First
• b) Code First
• c) Database First

5. Model First
• In the Model First approach, the database model is created first using
the ORM designer in Visual Studio. Once the model consisting of
entities and relationships has been designed, the physical database
will be generated from the model.
• For Example: Go through this link: https://www.simple-
talk.com/dotnet/.net-framework/different-approaches-of-entity-
framework/

6. Code First
• In Code-First Approach, we create the classes first and then generate
the database from the classes directly. In code first, we won’t use the
Entity Designer (for editing .edmx files) at all.
• For Example: Go through this link: https://www.simple-
talk.com/dotnet/.net-framework/different-approaches-of-entity-
framework/

7. Database First
• The next approach supported by the Entity Framework is the
database-first approach. In the database first approach, we are
creating the entity framework from an existing database. We use all
other functionality, such as the model/database sync and the code
generation, in the same way we used them in the Model First
approach.
• For Example: Go through this link: https://www.simple-
talk.com/dotnet/.net-framework/different-approaches-of-entity-
framework/

8. Advantages of EF
• Reduced development time: the framework provides the core data access
capabilities so developers can concentrate on application logic.
• Developers can work in terms of a more application-centric object
model, including types with inheritance, complex members, and relationships. In
.NET Framework 4, the Entity Framework also supports Persistence Ignorance
through Plain Old CLR Objects (POCO) entities.
• Applications are freed from hard-coded dependencies on a particular data engine
or storage schema by supporting a conceptual model that is independent of the
physical/storage model.
• Mappings between the object model and the storage-specific schema can change
without changing the application code.
• Language-Integrated Query support (called LINQ to Entities) provides IntelliSense
and compile-time syntax validation for writing queries against a conceptual
model.