Optimize the following SQL Query by using Query Tree and Heuristic Rules: SELECT C.Fname, E.Fname FROM Employee AS E, Customer AS C, Order AS O WHERE E.EMP_ID=O.E_ID AND C.City='Jeddah' AND C.Customer_ID=O.C_ID AND E.EMP_ID='12943'

Optimize the following SQL Query by using Query Tree and Heuristic Rules: SELECT C.Fname, E.Fname FROM Employee AS E, Customer AS C, Order AS O WHERE E.EMP_ID=O.E_ID AND C.City='Jeddah' AND C.Customer_ID=O.C_ID AND E.EMP_ID='12943'

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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Concept explainers

Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

Question

Optimize the following SQL Query by using Query Tree and Heuristic Rules:
SELECT C.Fname, E.Fname
FROM Employee AS E, Customer AS C, Order AS O
WHERE E.EMP_ID=O.E_ID AND C.City='Jeddah' AND C.Customer_ID=0.C_ID
AND E.EMP_ID='12943'
You should show the Initial Query Tree and add a screenshot of the Query
Tree after applying each rule.

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