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Relational databases are the core of most enterprise applications.
However, when you map a relational database to objects, it becomes
a challenge. Object relational mapping (ORM) is a programming framework
that allows you to define a mapping between application object model
and the relational database.
In an object model, the application objects are not aware of
the database structure. Objects have properties and references to
other objects. Databases consist of tables with columns that maybe
related to other tables. ORM provides a bridge between the relational
database and the object model.
By using ORM, you can access and update data entirely using the
object model of an application. ORM provides features such as:
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