- Study guides, Class notes & Summaries

Looking for the best study guides, study notes and summaries about ? On this page you'll find 1 study documents about .

All 1 results

Sort by:

Exam (elaborations)

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 gi
-

-

-

3

April 2023

2022/2023

A+
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.
AllAcademic
$10.49 More Info