Hi Experts,
what is the meaning of Trigger.oldMap.keySet(),  When we will use this trigger.  and what  is the function of this trigger..
if possible explain with simple example..
Please help me,

Thanking you & Regards,
Anji reddy

Hi,

I am Prasant.I am new to salesforce developemnet.I have learnet most of the salesforce concepts like Apex,triggers,API's and salesforce customization.I have practiced with varuous uses cases form this forum.However i still don't have experience of a full time project.So if any body can help me in this context.

Thanks in advance,
Prasant