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Computer Science  >  QUESTIONS & ANSWERS  >  Quiz: Query Optimization _ Consider the relations r1( A, B, C), r2(C, D, E ), and r3( E , F), with p (All)

Quiz: Query Optimization _ Consider the relations r1( A, B, C), r2(C, D, E ), and r3( E , F), with primary keys A, C, and E, respectively. Assume that r1 has 1000 tuples, r2 has 1500 tuples, and r3 has 750 tuples. Estimate the size of r1 ⋈ r2 ⋈ r3, and give an efficient plan for computing the join.

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Consider the relations r1( A, B, C), r2(C, D, E ), and r3( E , F), with primary keys A, C, and E, respectively. Assume that r1 has 1000 tuples, r2 has 1500 tuples, and r3 has 750 tuples. Estimate the size of r1 ⋈ r2 ⋈ ...
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