Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 12, Problem 12RQ
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Query optimization functions:
The objective of query optimization functions helps to reduce the costs related to
The cost related with database request is the function of,
- Cost for access time involved in accessing data which is stored on disk...
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Chapter 12 Solutions
Database Systems: Design, Implementation, & Management
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- Explain the concept of distributed query optimization. How do query planners in distributed DBMS optimize query execution across multiple nodes?arrow_forwardDescribe query optimization and the modes that an optimizer can operate in.arrow_forwardAnalyze the role of distributed query optimization. What are some techniques and algorithms used to optimize queries in distributed DBMS, and how do they impact query performance?arrow_forward
- What is the difference between scalar function and vector function in SQL DATABASE? Note: Question is based on SQL DATABASE.arrow_forwardWhy is it not desirable to force users to make an explicit choice of a queryprocessing strategy? Are there cases in which it is desirable for users tobe aware of the costs of competing query-processing strategies? Explain your answer.arrow_forwardDescribe the role of distributed query optimization in a Distributed DBMS. What strategies can be employed to optimize query performance in a distributed environment?arrow_forward
- What are the principles of query optimization in database systems? How can query execution plans be improved?arrow_forwardIn the context of database optimization, what are query execution plans, and how are they generated and utilized to improve query performance?arrow_forwardWhat exactly do you mean by "query optimization"?arrow_forward
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