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.

Changes:
Many bugs in the database engine have been fixed, and the new storage engine "MVStore" has been improved.

URL:
H2 Database Engine – Freecode

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