: "Oracle Berkeley DB Product Family
High Performance, Embeddable Database Engines
http://www.oracle.com/database/berkeley-db/index.html
Oracle Berkeley DB is a family of open source embeddable databases that allows developers to incorporate within their applications a fast, scalable, transactional database engine with industrial grade reliability and availability. As a result, customers and end-users will experience an application that simply works, reliably manages data, can scale under extreme load, but requires no ongoing database administration. As a developer, you can focus on your application and be confident that Oracle Berkeley DB will manage your persistence needs.


White paper: A Comparison of Oracle Berkeley DB and Relational Database Management Systems (PDF)
Technical resource: Visit the Berkeley DB Product Family page on the Oracle Technology Network
THE ORACLE BERKELEY DB FAMILY
Berkeley DB—The world's most popular embeddable database engine
Berkeley DB Java Edition—A pure Java version of Berkeley DB optimized for the Java environment
Berkeley DB XML—An embeddable XML database with XQuery-based access to documents stored in containers and indexed based on their content"