Question: Compose the selection predicate corresponding to the WHERE clause and transform it, using the idempotency rules, into the simplest equivalent form. Furthermore, compose a query

Compose the selection predicate corresponding to the WHERE clause and transform it, using the idempotency rules, into the simplest equivalent form. Furthermore, compose a query tree corresponding to the query. SELECT ENAME, SAL FROM EMP, PROJ, ASG, PAY WHERE EMP.ENO = ASG.ENO AND EMP.TITLE = PAY.TITLE AND (BUDGET>200000 OR DUR>24) AND ASG.PNO = PROJ.PNO AND (DUR>24 OR PNAME="CAD/CAM")

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