Add unchanging date/timestamp to record as it is added to the table. http://dev.mysql.com/doc/refman/5.5/en/trigger-syntax.html http://stackoverflow.com/questions/4417614/mysql-is-there-a-way-to-automatically-set-datetime-field-to-record-creation-tim
-- MySQL 5.5 syntax
-- yourTriggerName must be unique to the database
CREATE TRIGGER yourTriggerName BEFORE INSERT ON yourTable
FOR EACH ROW SET NEW.yourField = NOW();