The relations of two sub-entity sets of the same super entity set have the same

Question

The relations of two sub-entity sets of the same super entity set have the same keys the same attributes the same constraints the same natural joins with their super entity set All of the above None of the above the condition A = B in a WHERE clause of an SQL query, where A is an attribute in relation R and B an attribute in relations S, is true for all values of A and B where A = B for all values of A and B where A = B except when A has a NULL value for all values of A and B when? A = B except when B hits a NULL value for all values of A and B where A = B except when A and B have NULL values All of the above None of the above the condition A

Explanation / Answer

Below are the answers:

a) Ans: 5. All of the above

b) Ans: 5. All of the above

c) Ans: 5: All of the above

d) Ans: 5: All of the above

e) Ans: 5: All of the above

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