A Relationship Is An Association Between

Question: A _____ relationship exists when an association is maintained within a single entity.

1. weak

2. b. unary

3. c. strong

4. d. ternary

5. Answer: unary

6. Question: A(n) _____ is the set of possible values for a given attribute.

7. a. key

8. b. range

9. c. domain

10. d. identifier

11. Answer: domain

12. Question: A relationship is an association between _____.

13. Select one:

14. a. fields

15. b. objects

16. c. databases

17. d. entities

18. Answer: entities

19. Question: The entity relationship diagram (ERD) represents the _____ database as viewed by the end user.

20. Select one:

21. a. logical

22. b. condensed

23. c. conceptual

24. d. physical

25. Answer: conceptual

26. Question: The entity relationship model uses the associative entity to represent a(n) _____ relationship between two or more entities.

27. Select one:

28. a. N:1

29. b. M:1

30. c. M:N

31. d. 1:M

32. Answer: M:N

33. Question: A _____ attribute can be further subdivided to yield additional attributes.

34. Select one:

35. a. single-valued

36. b. simple

37. c. multivalued

38. d. composite

39. Answer: composite

40. Question: A _____ attribute is one that cannot be subdivided.

41. Select one:

42. a. simple

43. b. multivalued

44. c. composite

45. d. single-valued

46. Answer: simple

47. Question: If an entity can exist apart from all of its related entities, then it is existence-independent, and it is referred to as a(n) _____ entity.

48. Select one:

49. a. weak

50. b. unary

51. c. strong

52. d. alone

53. Answer: strong

54. Question: define existence-dependent

55. Answer: a property of an entity whose existence depends on one or more other entities.

56. Question: define existence_independent

57. Answer: a property of an entity that can exist apart from one or more related entities.