* [hsqldb User Guide|http://hsqldb.org/doc/guide/]
* [SQL Tutorial|http://www.w3schools.com/SQl/]
* [ANT Core SQL Task|http://ant.apache.org/manual/CoreTasks/sql.html]
* [SQL States|ftp://ftp.software.ibm.com/ps/products/db2/info/vr6/htm/db2m0/db2state.htm]