Definitely Guide to Berkeley DB XML covers Sleepycat's Berkeley DB XML, an open source embedded XML database. Combined with Berkeley DB's transactions, logging, and replication, BDB XML is a powerful document storage solution. Author Danny Brian presents XML basics from the ground up for XML beginners, and covers installation and configuration database, the core concepts behind Berkeley DB XML, see the architecture of the application, demonstration of simple operations (ie, the query text) to complex (eg, Calculation sets) by using XQuery and FLWOR expressions, document indexing options, and overall appearance in the API database.