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1- undo Similar to rollback except that it applies to a single operation rather than to a whole transaction a- True b- False _______________________________________ 2-
1- undo Similar to rollback except that it applies to a single operation rather than to a whole transaction
a- True
b- False
_______________________________________
2- Time varying attribute is an attribute that does not change over time.
a- True
b- False
___________________________________________
3- A timestamp is a unique identifier created by the DBMS to identify a transaction
a- True
b- False
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