H2 is an SQL database engine written in Java that implements the JDBC API. Embedded, server, and clustering modes are available. A browser based console application is included. The database has strong security features. Disk based and in-memory databases and tables are supported.


H2 is now dual-licensed under the Eclipse Public License (EPL) and the old 'H2 License' (which is basically the MPL). The Web console has been translated to traditional Chinese. An error with records larger than 8 KB has been fixed. Indexes were not used when enabling the optimization for IN(SELECT...).

URL: H2 Database Engine