The document discusses how to connect to and query a database using ADO.NET in ASP.NET. It explains that ADO.NET is used for data access and is part of the .NET framework. It then provides code examples to demonstrate how to: create a database connection; define a command to execute a SQL query; create a data reader to retrieve records; and bind the records to a repeater control to display them on a web page. It stresses the importance of closing the data reader and connection after database access is complete.