Derive the optimized tree for the below query using heuristic approach SELECT Dname, COUNT (*) FROM DEPARTMENT, EMPLOYEE, DEPENDENT WHERE Dnumber=Dno AND SSN=ESSN and Salary>40000 GROUP BY Dname HAVING COUNT (*) > 5;

Derive the optimized tree for the below query using heuristic approach SELECT Dname, COUNT () FROM DEPARTMENT, EMPLOYEE, DEPENDENT WHERE Dnumber=Dno AND SSN=ESSN and Salary>40000 GROUP BY Dname HAVING COUNT () > 5;

Programming with Microsoft Visual Basic 2017

8th Edition

ISBN:9781337102124

Author:Diane Zak

Publisher:Diane Zak

Chapter12: Database Queries With Sql

Section: Chapter Questions

Problem 1MQ2

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Concept explainers

Fundamentals of distributed DBMS

A software with a centralized system that handles the distributed database in such a way that all are stored in a single site is known as a database management system (DBMS). The idea of the distributed database system is the centralized database, the data is spread out on a distributed network among the cities each having its computer and data storage facilities. This distributed data management is considered a single logical database.

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Please do this correctly..

Derive the optimized tree for the below query using heuristic approach
SELECT Dname, COUNT (*) FROM DEPARTMENT, EMPLOYEE, DEPENDENT
WHERE Dnumber=Dno AND SSN=ESSN and Salary>40000
GROUP BY Dname
HAVING COUNT (*) > 5;

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