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Modify the FindBestPlan(S) function to create a function FindBestPlan(S, O), where O is a desired sort order for S, and which considers interesting sort orders. A null order indicates that the order is not relevant. Hints: An algorithm A may give the desired order O; if not a sort operation may need to be added to get the desired order. If A is a merge-join, FindBestPlan must be invoked on the two inputs with the desired orders for the inputs.

Modify the FindBestPlan(S) function to create a function FindBestPlan(S, O), where O is a desired sort order for S, and which considers interesting sort orders. A null order indicates that the order is not relevant. Hints: An algorithm A may give the desired order O; if not a sort operation may need to be added to get the desired order. If A is a merge-join, FindBestPlan must be invoked on the two inputs with the desired orders for the inputs.

Database System Concepts
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
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Modify the FindBestPlan(S) function to create a function FindBestPlan(S, O),
where O is a desired sort order for S, and which considers interesting sort
orders. A null order indicates that the order is not relevant. Hints: An algorithm
A may give the desired order O; if not a sort operation may need to be added to get the desired order. If A is a merge-join, FindBestPlan must be invoked on the two inputs with the desired orders for the inputs.
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