Changes

:: [http://dev.mysql.com/doc/refman/5.0/en/triggers.html MySQL] - Syntax [http://dev.mysql.com/doc/refman/5.0/en/trigger-syntax.html]

:: [http://www.postgresql.org/docs/8.1/interactive/triggers.html PostgreSQL]- Syntax [http://www.postgresql.org/docs/8.1/interactive/sql-createtrigger.html]

: Stored Procedures

:: [http://ovir.icp.ac.ru/oracle/doc/server/doc/scn73/ch14.htm Oracle Server Manual]

: Transactions

:: [http://ovir.icp.ac.ru/oracle/doc/server/doc/scn73/ch12.htm#toc094 Oracle Server Manual]

===Persistence===