Week 4

Question 1

Interaction Diagram Definition

Answer 1

Models that describe how a group of objects collaborate in some behavior - typically a single use case
Show a number of example objects and how messages are passed between them

Question 2

Interaction Diagram - 2 Types

Answer 2

Communication Diagram
Sequence Diagram

Question 3

Sequence Diagram - 3 Pros or Cons

Answer 3

1 Clearly show time ordering of messages
2 Large set of detailed notation options
3 Forced to extend to the right, uses horizontal space

Question 4

Communication Diagram - 4 Pros or Cons

Answer 4

Space Economical
Flexibility to add new objects 2 Dimensionally
More difficult to see sequence of messages
Fewer Notation Options

Question 5

Create and interaction diagram for each …

Answer 5

Operation Contract

Question 6

How to show instance of a class

Answer 6

Underline or Precede with a colon

Question 7

What kind of arrow in SD when creating an instance?

Answer 7

Dashed with Stick Arrow

Question 8

Synchronous Message Arrow

Answer 8

Solid with Filled Triangle

Question 9

Asynchronous Message Arrow

Answer 9

Solid with Stick Arrow

Question 10

Return Message Arrow

Answer 10

Dash with Stick Arrow

Question 11

Destroy Message Arrow

Answer 11

Solid with Filled Triangle, ends at X

Question 12

Activity Diagram Definition

Answer 12

UML Behavior Diagram that shows the control flow or data flow

Question 13

Actions coordinated by activity models can be initiated due to these 3 reasons

Answer 13

1. Other actions finish executing
2. Object and data become available
3. Some events external to the flow occur

Question 14

2 Activity Diagram purposes

Answer 14

Model business processes
Model data-flow

Question 15

Develop Activity Diagrams from…

Answer 15

use-cases
(Analysis Phase): Turning requirements into functional models

Question 16

Swimlanes Use

Answer 16

Assign Responsibility to Objects or Individuals who perform the activity
Represents a separation of roles among objects