MPLOYEE FNAME MINIT LNAME SSN BDATE ADDRESS SEX SALARY DNO DEPARTMENT DNAME DNUMBER MGRSSN MGRSTARTDATE DERT LOCA TION

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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  1. Given the following relational schema in the image attached.

For the following query, prepare the initial (canonical) query tree, then show how the query tree is optimized by the use of heuristic optimization. (Provide all the relational algebra expressions for the query trees).

‘For every project located in ‘Stanford’, list the project number, the controlling department number, and the department manager’s lastname, address and birthdate’

EMPLOYEE
FNAME
MINIT
LNAME
SSN
BDATE
ADDRESS
SEX
SALARY
DNO
DEPARTMENT
DNAME
DNUMBER
MGRSSN
MGRSTARTDATE
DEPT_LOCATION
DNUMBER
DLOCATION
PROJECT
PNAME
PNUMBER
PLOCATION
DNUM
DEPENDENT
ESSN
DEP-NAME
SEX
BDATE
RELATIONSHIP
Transcribed Image Text:EMPLOYEE FNAME MINIT LNAME SSN BDATE ADDRESS SEX SALARY DNO DEPARTMENT DNAME DNUMBER MGRSSN MGRSTARTDATE DEPT_LOCATION DNUMBER DLOCATION PROJECT PNAME PNUMBER PLOCATION DNUM DEPENDENT ESSN DEP-NAME SEX BDATE RELATIONSHIP
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