Is It Possible In General To Have Two Primary Indices On The Same Rel

1.	Is It Possible In General To Have Two Primary Indices On The Same Relation For Different Search Keys?
Answer» In general, it is not possible to have two primary indices on the same relation for different keys because the tuples in a relation would have to be STORED in different ORDER to have same values stored together.We COULD ACCOMPLISH this by storing the relation twice and duplicating all values, but for a centralized system, this is not efficient. In general, it is not possible to have two primary indices on the same relation for different keys because the tuples in a relation would have to be stored in different order to have same values stored together.We could accomplish this by storing the relation twice and duplicating all values, but for a centralized system, this is not efficient.

Is It Possible In General To Have Two Primary Indices On The Same Relation For Different Search Keys?

Answer»

In general, it is not possible to have two primary indices on the same relation for different keys because the tuples in a relation would have to be STORED in different ORDER to have same values stored together.We COULD ACCOMPLISH this by storing the relation twice and duplicating all values, but for a centralized system, this is not efficient.

In general, it is not possible to have two primary indices on the same relation for different keys because the tuples in a relation would have to be stored in different order to have same values stored together.We could accomplish this by storing the relation twice and duplicating all values, but for a centralized system, this is not efficient.

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