Answered: How the DBMS may increase or reduce the…

How the DBMS may increase or reduce the DBA's workload depending on how various heuristic rules and cost estimating approaches are combined during query optimisation.

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

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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How the DBMS may increase or reduce the DBA's workload depending on how various heuristic rules and cost estimating approaches are combined during query optimisation.

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Explain how each of the eight alternative cost estimation approaches may be paired with a number of heuristic criteria when the DBMS optimises the query, and how this affects the amount of work that the DBA must accomplish.
Explain how each of the eight cost estimating strategies can be paired with various heuristic rules during query optimization by the DBMS, and how this affects a DBA's workload.
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