The open-source InterBase(tm) 6.0 spin-off (Classic server version) InterBase is a world-class DBMS with a history too rich to detail here. Once selling for several thousands of dollars per license, some very big players use it worldwide. Inprise has open-sourced InterBase 6.0, and a lively bunch of folks has charged themselves with seeing that it lives on through the Firebird project. Note that as of Firebird 0.9_4, the locksmith back door has been closed. For more information on Firebird and InterBase, see: http://sourceforge.net/projects/firebird/ http://www.ibphoenix.com/ http://www.interbase2000.org/ http://www.interbase.com/ http://www.firebirdsql.org/ For more information on the locksmith back door, see: https://www.kb.cert.org/vuls/id/247371