While the definition looks complicated, Mystery in fact computesa property of R

Question

While the definition looks complicated, Mystery in fact computesa property of R that can be stated very succinctly. Try todetermine what Mystery is computing about R, and demonstrate yourunderstanding by identifying, from the list below, the correctexample of the result returned by the above query.

1.   Consider relation R(a) containing a set ofpositive integers with no duplicates, and the following recursiveSQL query :

While the definition looks complicated, Mystery in fact computesa property of R that can be stated very succinctly. Try todetermine what Mystery is computing about R, and demonstrate yourunderstanding by identifying, from the list below, the correctexample of the result returned by the above query.

Explanation / Answer

Dear.., a) If R = {2, 4, 6, 8, 10} then the query returns9. a) If R = {2, 4, 6, 8, 10} then the query returns9.
I hope this will helps you. a) If R = {2, 4, 6, 8, 10} then the query returns9.

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