August 2009
Intermediate to advanced
893 pages
26h 48m
English
Content preview from Database Systems: Concepts, Design and Applications
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Chapter 6 Entity-Relationship (ER) Model
State True/False
| 1. | False |
| 2. | True |
| 3. | False |
| 4. | False |
| 5. | False |
| 6. | True |
| 7. | True |
| 8. | True |
| 9. | True |
| 10. | True |
| 11. | False |
| 12. | True |
| 13. | True |
| 14. | True |
| 15. | True |
| 16. | False |
| 17. | True |
| 18. | True |
| 19. | False |
| 20. | True |
| 21. | True |
| 22. | False |
| 23. | False |
| 24. | Fasle. |
Tick (✓) the Appropriate Answer
| 1. | (c) |
| 2. | (b) |
| 3. | (a) |
| 4. | (d) |
| 5. | (d) |
| 6. | (a) |
| 7. | (b) |
| 8. | (d) |
| 9. | (b) |
| 10. | (a) |
| 11. | (a). |
Fill in the Blanks
| 1. | P.P Chen |
| 2. | Object, thing |
| 3. | Association, entities |
| 4. | Connectivity |
| 5. | (a) entities, (b) Attributes, (c) relationships |
| 6. | Lines |
| 7. | Ternary relationship |
| 8. | Recursive relationship |
| 9. | Binary relationship |
| 10. | Cardinality |
| 11. | Entity, relationship |
| 12. | Attribute or data items |
| 13. | Entity set |
| 14. | (a) entity sets, (b) relationship sets, (c) attributes, (d) mapping cardinalities |
| 15. | Data (b) data organisation |
| 16. | Strong entity type |
| 17. | Simple ... |