DATABASE SYSTEM CONCEPTS (LOOSELEAF)
7th Edition
ISBN: 9781260515046
Author: SILBERSCHATZ
Publisher: MCG
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Chapter 22, Problem 8PE
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Efficient ways to minimize or avoid repartitioning:
- The aggregate can be computed for each node locally without making any repartitioning.
- The partitioning on s.B implies to the partitioning on s.A,s.B.
- Understanding why the partitioning on the (A,B) required that tuples to be with the same value for (A,B) is that it should be in the same partition.
- Partitioning made just on B by ignoring A will also need to satisfy the requirement...
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Chapter 22 Solutions
DATABASE SYSTEM CONCEPTS (LOOSELEAF)
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