Microsoft Data Access Application Block

Applications can use this application block in a variety of situations, such as reading data for display, passing data through application layers, and submitting changed data back to the database system.

The application block includes support for both stored procedures and in-line SQL. Common housekeeping tasks, such as managing connections and creating and caching parameters, are encapsulated in the application block's methods. In other words, the Data Access Application Block provides access to the most often used features of ADO.NET in simple-to-use classes; this boosts developer productivity.