Commit, Rollback and Savepoint in oracle

Explain Commit, Rollback and Savepoint.

For a COMMIT statement, the following is true:

• Other users can see the data changes made by the transaction.
• The locks acquired by the transaction are released.
• The work done by the transaction becomes permanent.

A ROLLBACK statement gets issued when the transaction ends, and the following is true.

• The work done in a transition is undone as if it was never issued.
• All locks acquired by transaction are released.

It undoes all the work done by the user in a transaction. With SAVEPOINT, only part of transaction can be undone.