Ado.Net

The document provides an introduction and overview of ADO.NET, which replaced ADO as the underlying data framework for .NET. It discusses the key objects in ADO.NET like the Connection, Command, DataSet, and DataAdapter. It explains how ADO.NET encourages a disconnected data model where the connection to the database is opened for as little time as possible. It then provides code examples in VB.NET and C# for common data access tasks like retrieving a DataSet, using a DataReader, performing CRUD operations, and getting a single value.