remember oracle and db2 are obsolete: www.postgresql.org

yep and hek firebird db is not bad either http://www.firebirdsql.org/ remember mysql is about the 3rd or 4th+ best free database and is only popular because it was easy for php devs to setup on thier laptop. magma smalltalk db nice http://wiki.squeak.org/squeak/2665 and then sqlite www.sqlite.org