I have mentioned a couple of other Enterprise Library Application Blocks so far:
Probably the most popular application block is the Data Access Application Block (DAAB). For detailed information on this block, you can read the documentation. However, in general, DAAB simplifies the task of reading and writing information to a database by providing a simple API and a library that provides access to the most frequently used features of ADO.NET. It essentially handles the details of connection management, etc. and allows you to read and write data to the database with fewer lines of code and in a consistent manner.
As with all the application blocks in the Enterprise Library (download), you need to really familiarize yourself with the Enterprise Library Configuration Tool that is part of the download. It helps create the necessary configuration files that allow each block to run accordingly. Shown below is a snippet of the configuration tool allowing me to customize the configuration files for my local Sql Server and the Northwind Database.
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