HyperSQL version 2.2 Documentation HSQLDB (HyperSQL Database) is a relational database engine written in Java. Version 2.2 is the result of over 5 years development since the last major version. It offers many features and adheres closely to the latest SQL and JDBC 4 standards. A set of HTML, PDF and text documents covering different aspects of HSQLDB and some of its utilities. HyperSQL User Guide

