What update anomalies occur in the EMP_PROJ and EMP_DEPT relations of Figures 14.3 and 14.4? Figures 14.3
Question:
What update anomalies occur in the EMP_PROJ and EMP_DEPT relations of Figures 14.3 and 14.4?
Figures 14.3
Figures 14.4
Transcribed Image Text:
Redundancy ЕMP DEPT Ename Smith, John B. Wong, Franklin T. Zelaya, Alicia J. Wallace, Jennifer S. 987654321 1941-06-20 291 Berry, Bellaire, TX Narayan, Ramesh K. 666884444 1962-09-15 975 FireOak, Humble, TX English, Joyce A. Jabbar, Ahmad V. Borg, James E. Ssn 123456789 1965-01-09 731 Fondren, Houston, TX 333445555 1955-12-08 638 Voss, Houston, TX 999887777 1968-07-19 3321 Castle, Spring, TX Bdate Address Dnumber Dname Dmgr_ssn Research 333445555 5 Research 333445555 Administration 987654321 Administration 987654321 4 4 Research Research Administration 987654321 333445555 453453453 1972-07-31 5631 Rice, Houston, TX 987987987 1969-03-29 980 Dallas, Houston, TX 888665555 1937-11-10 450 Stone, Houston, TX 333445555 4 Headquarters 888665555 Redundancy Redundancy EMP PROJ Ssn Pnumber Hours Ename Pname Plocation 123456789 32.5 Smith, John B. ProductX Bellaire 123456789 2 7.5 Smith, John B. ProductY Sugarland Narayan, Ramesh K. English, Joyce A. English, Joyce A. Wong, Franklin T. Wong, Franklin T. Wong, Franklin T. Wong, Franklin T. Zelaya, Alicia J. Zelaya, Alicia J. 666884444 40.0 ProductZ Houston 453453453 1 20.0 ProductX Bellaire Sugarland Sugarland 453453453 20.0 ProductY 333445555 2 10.0 ProductY 333445555 3 10.0 ProductZ Houston 333445555 10.0 Computerization Reorganization 10 Stafford 333445555 20 10.0 Houston 999887777 30 30.0 Newbenefits Stafford 999887777 10 10.0 Computerization Computerization Stafford 987987987 10 35.0 Jabbar, Ahmad V. Stafford 987987987 30 5.0 Jabbar, Ahmad V. Newbenefits Stafford 987654321 30 20.0 Wallace, Jennifer S. Newbenefits Stafford 987654321 20 15.0 Wallace, Jennifer S. Reorganization Reorganization Houston 888665555 Borg, James E. 20 Null Houston
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The given relations has the following update anamolies Insertion Anamoly If a tuple is inserted in r...View the full answer
Related Book For
Fundamentals Of Database Systems
ISBN: 9780133970777
7th Edition
Authors: Ramez Elmasri, Shamkant Navathe
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