2. WHAT IS ENTITY
FRAMEWORK ?
The Microsoft Entity Framework is an Object/Relational
Mapping (ORM) framework.
Object-Relational Mapping (ORM) is a programming
technique for automatic mapping and converting data
Between relational database object and Domain objects
ORM creates a “virtual object database“
Which can be used from within the programming language,
e.g. C# or Java
3. ORM frameworks typically provide the following
functionality:
Creating object model by database schema
Creating database schema by object model
Querying data by object-oriented API
Data manipulation operations
CRUD – create, retrieve, update, delete
ORM frameworks automatically generate SQL to perform
the requested data operations
4. ORM MAPPING –
EXAMPLEDatabase and Entities mapping Diagrams for a subset of the database
4
Relational database
schema
ORM Entities (C#
Classes)
ORM
Framework
5. ADVANTAGE OF
ADO.NET EF
Easy to map business objects (with drag & drop tables on
environment).
It keeps a good performance when you work with a small
/ middle domain model.
Its fast and straight forward using LINQ/FE objects For
Add/Modify/Delete/Update.
the framework provides the core data access capabilities
so developers can concentrate on application logic
6.
7. ENTITY
FRAMEWORK
FEATURESEntity Framework (EF) standard features:
Maps tables, views, stored procedures and
functions as .NET objects
Provides LINQ-based data queries
Executed as SQL SELECTs on the database server
CRUD operations – Create/Read/Update/Delete
Create compiled queries – for executing the same
parameterized query multiple times
Creating or deleting the database schema
