Hsqldb is an sql relational database engine written in java. it has a jdbc driver and supports a rich subset of sql-92 (bnf tree format) plus sql:1999 and sql:2003 enhancements. it offers a small, fast database engine that offers both in-memory and disk-based tables. embedded and server modes are available. additionally, it includes tools such as a minimal web server, in-memory query and management tools (can be run as applets), and a number of demonstration examples.

this package contains the files necessary to run an hsqldb server. more commonly, hsqldb is used as an embedded database engine, which does not require this package.

web site: http://hsqldb.org/