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.

This release improves MySQL and PostgreSQL compatibility, improves the MVStore storage engine, and adds the new data type "geometry" for spatial data.

H2 Database Engine – Freecode

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