HyperSQL 2.2 Released
HSQLDB supports the widest range of SQL Standard features seen in any open source database engine. We have reached SQL Standard conformance to almost full SQL-1992 Advanced Level and SQL:2008 core language features plus an extensive list of SQL:2008 optional features and many extensions.
Version 2.2 is fully multithreaded and supports high performance 2PL and MVCC (multiversion concurrency control) transaction control models. See the list of new features in version 2.2.
Download the full package from the file download page. This release marks the 10th anniversary of this project.
HSQLDB 1.8 has been out for over 5 years and is distributed with many open-source and commercial products. It is also the database engine in OpenOffice.org 3.3. We continue to release stable bug-fix versions of 1.8.