Consider the following UNIVERSITY DB, the given SQL query, and the provided canonical tree. Apply Transformation rules and heuristic algorithm to optimize the query. Student(sno,sname,address,phone) Professor(pno, ssn, pname, address, phone) Lecture(lno, pno, time, date) Attend(sno,lno) SELECT s.sname FROM student s, attend a, lecture l, professor p WHERE s.sno=a.sno AND a.lno=l.lno AND l.pno=p.pno and p.ssn=“100456”

Consider the following UNIVERSITY DB, the given SQL query, and the provided canonical tree. Apply Transformation rules and heuristic algorithm to optimize the query. Student(sno,sname,address,phone) Professor(pno, ssn, pname, address, phone) Lecture(lno, pno, time, date) Attend(sno,lno) SELECT s.sname FROM student s, attend a, lecture l, professor p WHERE s.sno=a.sno AND a.lno=l.lno AND l.pno=p.pno and p.ssn=“100456”

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter5: Looping

Section: Chapter Questions

Problem 17RQ

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