Chapter 6 Sad

1. ____ is a widely used method of visualizing and documenting an information system. a. UML c. UNIX b. Java d. DFD

2. An object has certain ____, like the make, model, and color of a car. a. keys c. indices b. attributes d. packets

3. An object's ____ are the tasks or functions the object performs. a. messages c. instances b. commands d. methods

4. Your car performs a(n) ____ called OPERATE WIPERS when you send a message by moving the proper control. a. method c. command b. instance d. objective

5. A(n) ____ represents a real person, place, event, or transaction. a. object c. command b. instance d. method

6. ____ are characteristics that describe the object. a. Indices c. Packets b. Attributes d. Keys

7. A(n) ____ is a group of similar objects. a. aggregate c. class b. concatenation d. packet

8. A(n) ____ is a specific member of a class. a. key c. lifeline b. index d. instance

9. Your red Mustang is a(n) ____ of the CAR class. a. index c. metric b. key d. instance

10. The UML represents an object as a(n) ____ with the object name at the top, followed by the object's attributes and methods. a. circle c. triangle b. rectangle d. oval

11. The number of ____ needed to describe an object depends on the business requirements of the information system and its users. a. attributes c. indices b. packets d. keys

12. If ____ are similar to adjectives that describe the characteristics of an object, objects are similar to nouns. a. packets c. indices b. attributes d. keys

13. In an object-oriented system, objects can ____ certain attributes from other objects. a. relate c. inherit b. concatenate d. reformat

14. The ____ of an object is an adjective that describes the object's current status. a. polymorphism b. encapsulation c. resemblance d. state

15. Objects can have a specific attribute called a(n) ____. a. state c. instance b. cycle d. status

16. A(n) ____ defines specific tasks that an object can perform. a. attribute c. command b. method d. message

17. ____ resemble verbs that describe what and how an object does something. a. Methods c. Messages b. Commands d. Attributes

18. A ____ is a command that tells an object to perform a certain method. a. dictum c. statement b. message d. baseline

19. The concept that a message gives different meanings to different objects is called ____. a. encapsulation b. dynamic addressing c. polymorphism d. linear addressing

20. A major advantage of O-O designs is that systems analysts can save time and avoid errors by using ____ objects. a. dynamic c. modular b. feasible d. linear

21. ____ allows objects to be used as modular components anywhere in the system. a. Dynamic addressing b. Technical feasibility c. Encapsulation d. Linear addressing

22. As shown in the accompanying figure, objects within a class can be grouped into ____, which are more specific categories within a class. a. schedules b. units c. subclasses d. clusters

23. An object belongs to a group or category called a(n) ____. a. catalog c. index b. roster d. class

24. All objects within a(n) ____ share common attributes and methods. a. catalog c. index b. roster d. class

25. A class can belong to a more general category called a ____. a. superclass c. subclass b. roster d. catalog

26. ____ enable objects to communicate and interact as they perform business functions and transactions required by the system. a. Aggregates c. Clusters b. Relationships d. Linkages

27. ____ describe what objects need to know about each other, how objects respond to changes in other objects, and the effects of membership in classes, superclasses, and subclasses. a. Aggregates c. Clusters b. Relationships d. Linkages

28. ____ enables an object to derive one or more of its attributes from another object. a. Concatenation b. Encapsulation c. Inheritance d. Polymorphism

29. Inheritance enables a ____ to derive one or more of its attributes from a parent. a. child c. package b. user d. class

30. An object ____ diagram shows the objects and how they interact to perform business functions and transactions. a. relationship b. precedent c. antecedent d. parent

31. In a use case, an external entity is called a(n) ____. a. benefit c. domain b. cost d. actor

32. The UML symbol for a use case is a(n) ____ with a label that describes the action or event. a. rectangle c. dashed line b. triangle d. oval

33. The line from the actor to a use case is called a(n) ____. a. association c. lifeline b. highlight d. linkage

34. A use case ____ is a visual summary of several related use cases within a system or subsystem. a. description c. schematic b. diagram d. outline

35. When you create a use case diagram, the first step is to identify the system boundary, which is represented by a ____. a. triangle c. rectangle b. circle d. square

36. In a class diagram, each class appears as a(n) ____, with the class name at the top, followed by the class's attributes and methods. a. rectangle c. oval b. circle d. triangle

37. When you construct a ____, you review the use case and identify the classes that participate in the underlying business process. a. class diagram b. sequence diagram c. use case schematic d. DFD

38. The UML notation ____ identifies a zero or many relation. a. 0..1 c. 0..* b. 1..* d. 0..0

39. Which of the following is not represented by a symbol in a sequence diagram? a. Classes c. Lifelines b. Indices d. Messages

40. In a sequence diagram, a lifeline is identified by a ____ line. a. solid c. red b. dashed d. curved