Apache derby is an open source relational database implemented entirely in java.
* derby has a small footprint -- about 2.6 megabytes for the base engine and
embedded jdbc driver.
* derby is based on the java, jdbc, and sql standards.
* derby provides an embedded jdbc driver that lets you embed derby in any
java-based solution.
* derby also supports the more familiar client/server mode with the derby
network client jdbc driver and derby network server.
* derby is easy to install, deploy, and use.
this package includes the database server, the embedded jdbc driver and localisations.