is any one there who know about the trrigring program?any one having idea of book or any other way to get command over this.
You better stay away from triggers, especially if you don’t really know what is this and what they are for. It’s kinda shady thing which makes sense in very rare/specific situations, for example, audit or history.
Could you tell me why you think triggers are 'shady'? I've used them once before and it saved me quite a bit of time PHP coding.