ADO.NET is a set of computer software components that programmers
can use to access data and data services from the database. It is a
part of the base class library that is included with the Microsoft .NET Framework. It is commonly used by programmers to access and modify data stored in relational database systems, though it can also access data in non-relational sources. ADO.NET is sometimes considered an evolution of ActiveX Data Objects (ADO) technology, but was changed so extensively that it can be considered an entirely new product .
ADO.NET provides a bridge between the front end controls and the back
end database. The ADO.NET objects encapsulate all the data access
operations and the controls interact with these objects to display data,
thus hiding the details of movement of data read more.
The following figure shows the ADO.NET objects at a glance:
