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Use the Relational algebra to retrieve the First names (Fname) and Salary of all employees in department 4 who work more than 10 hours per week on the ProductX project. d Give the table result from cach step. ΕMPLOYEΕ WORKS ON Fname Ssn Lname Salary Essn Pno Hours 123456789 John Franklin Alicia Smith Wong Zelaya Wallace 30000 123456789 32.5 333445555 40000 123456789 7.5 999887777 25000 666884444 40 jennifer 987654321 43000 453453453 1. 20 666884444 Narayan English Jabbar Ramesh 38000 453453453 20 Joyce Ahmad 453453453 25000 333445555 10 987987987 25000 333445555 10 James 888665555 Borg 55000 333445555 10 10 333445555 20 10 PROJECT 999887777 30 30 999887777 10 987987987 987987987 30 10 Pnumber Plocation Dnum Bellaire Pname ProductX 10 35 ProductY Sugarland OE 15 987654321 20 Productz Houston 987654321 20 Computerization 10 Stafford Reorganization 20 Houston 888665555 20 NULL Newbenefits 30 Stafford DEPARTMENT Dnumber Mgr ssn 333445555 987654321 888665555 Dname Research Administration Headquarters

Use the Relational algebra to retrieve the First names (Fname) and Salary of all employees in department 4 who work more than 10 hours per week on the ProductX project. d Give the table result from cach step. ΕMPLOYEΕ WORKS ON Fname Ssn Lname Salary Essn Pno Hours 123456789 John Franklin Alicia Smith Wong Zelaya Wallace 30000 123456789 32.5 333445555 40000 123456789 7.5 999887777 25000 666884444 40 jennifer 987654321 43000 453453453 1. 20 666884444 Narayan English Jabbar Ramesh 38000 453453453 20 Joyce Ahmad 453453453 25000 333445555 10 987987987 25000 333445555 10 James 888665555 Borg 55000 333445555 10 10 333445555 20 10 PROJECT 999887777 30 30 999887777 10 987987987 987987987 30 10 Pnumber Plocation Dnum Bellaire Pname ProductX 10 35 ProductY Sugarland OE 15 987654321 20 Productz Houston 987654321 20 Computerization 10 Stafford Reorganization 20 Houston 888665555 20 NULL Newbenefits 30 Stafford DEPARTMENT Dnumber Mgr ssn 333445555 987654321 888665555 Dname Research Administration Headquarters

Database System Concepts
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
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Use the Relational algebra to retrieve the First names (Fname) and Salary of all employees in department 4 who work more than 10 hours per week on the ProductX project dGive the table result from each step. ΕMPLOYEE WORKS ON Fname Ssn Lname Salary Essn Pno Hours 30000 40000 John 123456789 Smith Wong Zelaya 123456789 32.5 Franklin 333445555 123456789 7.5 Alicia 999887777 25000 666884444 40 jennifer 987654321 Wallace 43000 453453453 20 38000 666884444 453453453 Ramesh Narayan English 453453453 20 Joyce Ahmad 25000 333445555 10 987987987 Jabbar 25000 333445555 10 888665555 Borg 55000 James 333445555 10 10 333445555 20 10 PROJECT 999887777 30 30 Pname Pnumber Plocation Dnum 999887777 10 10 ProductX 1 Bellaire 987987987 10 35 ProductY 2 Sugarland 5. 987987987 30 987654321 30 20 Productz Houston 987654321 20 15 Computerization Reorganization 10 Stafford 4. 888665555 20 NULL 20 Houston Newbenefits 30 Stafford 4 DEPARTMENT Dnumber Mgr_ssn 333445555 987654321 888665555 Dname Research Administration Headquarters
Transcribed Image Text:Use the Relational algebra to retrieve the First names (Fname) and Salary of all employees in department 4 who work more than 10 hours per week on the ProductX project dGive the table result from each step. ΕMPLOYEE WORKS ON Fname Ssn Lname Salary Essn Pno Hours 30000 40000 John 123456789 Smith Wong Zelaya 123456789 32.5 Franklin 333445555 123456789 7.5 Alicia 999887777 25000 666884444 40 jennifer 987654321 Wallace 43000 453453453 20 38000 666884444 453453453 Ramesh Narayan English 453453453 20 Joyce Ahmad 25000 333445555 10 987987987 Jabbar 25000 333445555 10 888665555 Borg 55000 James 333445555 10 10 333445555 20 10 PROJECT 999887777 30 30 Pname Pnumber Plocation Dnum 999887777 10 10 ProductX 1 Bellaire 987987987 10 35 ProductY 2 Sugarland 5. 987987987 30 987654321 30 20 Productz Houston 987654321 20 15 Computerization Reorganization 10 Stafford 4. 888665555 20 NULL 20 Houston Newbenefits 30 Stafford 4 DEPARTMENT Dnumber Mgr_ssn 333445555 987654321 888665555 Dname Research Administration Headquarters
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