Answered: How the DBMS may mix many heuristic…

How the DBMS may mix many heuristic rules and cost estimate approaches during query optimisation, and how this affects the workload of the DBA.

MIS

9th Edition

ISBN:9781337681919

Author:BIDGOLI

Publisher:BIDGOLI

Chapter3: Database Systems, Data Warehouses, And Data Marts

Section: Chapter Questions

Problem 6AYRM

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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 mix many heuristic rules and cost estimate approaches during query optimisation, and how this affects the workload of the DBA.

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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.
The eight cost estimation approaches may be paired with a number of heuristic criteria during DBMS query optimisation, each of which might have a significant influence on the DBA's workload.
The rules employed by the DBMS during the query optimization process are described, as well as the impact this has on the quantity of work that a DBA is required to do.
An explanation of how the DBMS may combine several heuristic rules and cost estimation methodologies during query optimisation, and how this impacts the DBA's workload?
When a DBMS optimizes a query, it may combine multiple heuristic rules and cost estimate strategies. How does this affect the DBA's workload?
A DBA's workload may be affected by the use of various heuristic rules for each of the eight cost estimates algorithms during DBMS query optimization.
The rules that are used by the DBMS in the course of the query optimization process, as well as the effect that this has on the amount of work that a DBA is required to complete, are discussed.
The DBA's time may be affected by the DBMS's ability to blend cost estimations with query optimisation heuristics.
During the process of DBMS query optimisation, please explain how each of the eight cost estimation algorithms may be matched with a different set of heuristic rules and how this impacts the amount of work a DBA has to do.
Explain how each of the eight cost estimate methods may be coupled with different heuristic rules during query optimization by the DBMS, and how this affects the DBA's workload.
An explanation of how multiple heuristic rules and cost estimate strategies may be merged during query optimization by the DBMS and how this affects the DBA's workload?
What kinds of shifts might be expected in the workload of the DBA as a result of the DBMS's employment of several heuristic rules and cost estimation strategies during query optimisation?