8. Query Processing and Optimization - Express Learning: Database .8 Query Processing and Optimization 1. What do you mean by query processing? What are the various steps involved in query processing? Explain with the help of a block diagram . - Selection from Express Learning: Database Management Systems [Book]مجموع processung querry,Chapter 5: Overview of Query ProcessingQuery processing: A 3-step process that transforms a high-level query (of relational calculus/SQL) into an equivalent and more efficient lower-level query (of relational algebra). 1. Parsing and translation. – Check syntax and verify relations. – Translate the query into an equivalent relational algebra expression. 2.
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