Test 2 - Databases | Computer Science(CS)

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Question 1 of 26

Given relations r(w,x) and s(y,z), the result of select distinct w,x from r,s is guaranteed to be the same as r, provided

Select Your Answer:

r has no duplicate and s is non empty

r and s have no duplicate

s has no duplicate and r is non empty

r and s have the same number of tuples

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