L4 - Managing Database and SQL Performance - CH13.pdf

L4 - Managing Database and SQL Performance - CH13.pdf

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Learning Unit 4 ­­ Managing Database and SQL Performance Focus on the basic database performance­tuning concepts and how the DBMS processes SQL queries 4.1 Overview Copyrighted Material ­ subject to fair use exception In this chapter, you need to focus on the following: Basic database performance tuning concepts How a DBMS processes SQL queries The importance of indexes in query processing How to formulate queries and tune the DBMS for optimal performance Pay adequate attention to the following sections: Section 13.1: Database Performance­Tuning Concepts Notes: ensure that you understand and can explain the basic DBMS architecture Section 13.2: Query Processing Notes: you need to be able to identify and discuss the different phases in which DMBS processes queries Section: 13.4: Optimizer Choices Notes: explain the two modes that the query optimizer can operate in
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