Need help in triggers

[Yogendra Kaushik <yogendra.kaushik@xxxxxxxxx>]

Hi all's
   i am working on an application in which we are using PostgreSql as an
database, i need to write trigger for my application. Can any one help me
how can i write it.
     i have try to write it, but did not get success.

-- 
     Regard's
Yogendra kaushik