HSQLDB [SEP] license
and a number of demonstration examples. It can run on Java runtimes from version 1.1 upwards, including free Java implementations such as Kaffe.
HSQLDB is available under a BSD license. It is used as a database and persistence engine in many open source software projects, such as OpenOffice Base, LibreOffice Base, and the Jitsi VoIP and video-conference client since version 2.6. It is also used in commercial products, such as Mathematica and InstallAnywhere (starting with version 8.0).
Transaction support.
HSQLDB version 2.0
API rather than SQL (though an extremely rudimentary SQL variant is supported).
The project is no longer maintained.
Comparisons of database storage engines HSQLDB.
HSQLDB is an opensource relational database management system with a BSD-like license that runs in the same Java Virtual Machine as the embedded application. HSQLDB supports a variety of in-memory and disk-based table modes, Unicode and SQL:2008.
Comparisons of database storage engines InfinityDB.
InfinityDB Embedded Java DBMS is a sorted hierarchical key/value store. It now