The following sections of the online reference manual provide more information about the topics covered in this chapter:
UPDATE Syntax http://dev.mysql.com/doc/refman/5.0/en/update.html
DELETE Syntax http://dev.mysql.com/doc/refman/5.0/en/delete.html
START TRANSACTION, COMMIT, and ROLLBACK Syntax http://dev.mysql.com/doc/refman/5.0/en/commit.html