If a transaction has an exclusive lock on some data, then what are the other types of lock which can be applied on it?

If a transaction has an exclusive lock on some data, then what are the

1.	If a transaction has an exclusive lock on some data, then what are the other types of lock which can be applied on it?
Answer» A transaction gets an Exclusive lock when it is about to write at that time no other lock can be applied on it.