H2 Database Engine Java H2 Database Engine H2 is a relational database management system written in Java. It can be embedded in Java applications or run in the client-server mode. The disk footprint is about 1 MB. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server. It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. (from Wikipedia) H2 1.3.164 2012-01-03 1.3.164 H2 1.3.163 2011-12-30 1.3.163 H2 1.3.162 2011-11-26 1.3.162 H2 1.3.161 2011-10-28 1.3.161 H2 1.3.160 2011-09-11 1.3.160 H2 1.3.159 2011-08-13 1.3.159 H2 1.3.158 2011-07-17 1.3.158 H2 1.3.157 2011-06-25 1.3.157 H2 1.3.156 2011-06-17 1.3.156 H2 1.3.155 2011-05-27 1.3.155 H2 1.3.154 2011-04-04 1.3.154 H2 1.3.153 2011-03-14 1.3.153 H2 1.3.152 Beta 2011-03-01 1.3.152 Beta H2 1.3.151 Beta 2011-02-12 1.3.151 Beta H2 1.3.150 Beta 2011-01-28 1.3.150 Beta H2 1.3.149 Beta 2011-01-07 1.3.149 Beta