Basic Steps in Query Processing(Cont.) Parsing and translation translate the query into its internal form.This is then translated into relational algebra. Parser checks syntax,verifies relations ■Evaluation The query-execution engine takes a query-evaluation plan, executes that plan,and returns the answers to the query. Database System Concepts-7th Edition 15.4 @Silberschatz,Korth and SudarshanDatabase System Concepts - 7 15.4 ©Silberschatz, Korth and Sudarshan th Edition Basic Steps in Query Processing (Cont.) ▪ Parsing and translation • translate the query into its internal form. This is then translated into relational algebra. • Parser checks syntax, verifies relations ▪ Evaluation • The query-execution engine takes a query-evaluation plan, executes that plan, and returns the answers to the query