Common transaction processing in Oracle

Recently, I have to deal with transactions. I have sorted out the following common Oracle transaction methods:
CommitUsage :(The transaction is completed, the data is modified successfully, and is open to other users.)
For example:

Update Plan type Set Plan type = ' Haha '   Where Plan type = ' Test ' ;
Commit ;

After the update statement is executed, the data in the table will not be changed.CommitThen the data in the table can be modified.

RollbackUsage :(Undo transactions, undo all operations)

Update Plan type Set Plan type = ' Haha '   Where Plan type = ' Test ' ;
Rollback ;

The updated data will be rolled back directly.

Rollback to savepointUsage :(Undo the operation after the set rollback point)

Update Plan type Set Plan type = ' Haha '   Where Plan type = ' Test ' ;
Savepoint my_savepoint;
Update Plan type Set Plan type = ' Test 2 '   Where Plan type = ' Work ' ;
Rollback   To My_savepoint;

The data before the rollback point will actually affect the table, and the data after the rollback point will be rolled back.