Mini created a relation in which two of the tuples have the same combi

1.	Mini created a relation in which two of the tuples have the same combination of values for all their at tributes. Is this allowed? Give reason.
Answer» Answer 1 No. It is not allowed because a good DBMS does not allow duplication of the same data. i.e. data redundancy is not allowed. Answer 2. Yes. Same values of data is allowed if primary key or unique key is not defined in the relation.

Mini created a relation in which two of the tuples have the same combination of values for all their at tributes. Is this allowed? Give reason.

Answer»

Answer 1

No. It is not allowed because a good DBMS does not allow duplication of the same data. i.e. data redundancy is not allowed.

Answer 2.

Yes. Same values of data is allowed if primary key or unique key is not defined in the relation.