Thanks for your reply..

If I need to change the Db name and Flatfile source name to the package (which is not deployed yet)

can I update the SSIS_config table at the back end???

I tried it by updating it at the back end,but when I opened the package I need to do the changes manually,So when I do it manually in BIDS te table is updated.But when I update at the back end its not reflecting in BIDS.

So what should I do to do that automatically.Because I have 100 packages which needs to be changed often.(i.e; Database name and Flatfile source name)