Consider the join R ▷◁ S where the join predicate is R.a = S.b, given the following metadata about R and S:Relation R contains 2,000 tuples and has 10 tuples per blockRelation S contains 10,000 tuples and has 10 tuples per blockAttribute a of relation R is the primary key for R, and every tuple in R matches 5 tuples in SThere exists a primary index on S.b with height 3There exists a secondary index on R.a with height 2The buffer can hold 5 blocksWhat is the cost of a plan that evaluates this query using sort-merge join. Show the details of your cost analysis.Please show detailed explaination.

Answered: d has 10 tuples per block Relation S…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Consider the join R ▷◁ S where the join predicate is R.a = S.b, given the following metadata about R and S:

Relation R contains 2,000 tuples and has 10 tuples per block
Relation S contains 10,000 tuples and has 10 tuples per block
Attribute a of relation R is the primary key for R, and every tuple in R matches 5 tuples in S
There exists a primary index on S.b with height 3
There exists a secondary index on R.a with height 2
The buffer can hold 5 blocks

What is the cost of a plan that evaluates this query using sort-merge join. Show the details of your cost analysis.

Please show detailed explaination.

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