Hi Ramya.
I'm not too sure what you meant by your reference to restoring an "incremental" backup. If you have an incremental backup then you have to initially restore your last full backup and then one or more incremental backups (depends on whether you have "overlap", etc). If you explain your situation, someone can explain what to do.
The rest of your question seems to suggest that you might want to "automate" a restore of a backup that has been cut into multiple segments. If that is the case -- it's quite easy. But please explain your situation a little better, first.
Ron.