Software Design and Reuse

Question 1

Types of classes

Answer 1

● Entity Classes: model info that is long lived
● Boundary Classes: model the interaction between the software and its actors. Generally associated with I/O. Ex/ GUI class, “Report” class, etc.
● Control Classes: model complex computation and algorithms. Ex/ “Calculate profits”

Question 2

Noun Extraction Method

Answer 2

look at nouns (person, place, thing) to find out your possible classes

Question 3

what does CRC stand for

Answer 3

Class-Responsibility-Collaboration

Question 4

what is CRC

Answer 4

Dev team fills a card about a class and their responsibilities and collaboration with other classes

Question 5

CRC Process

Answer 5

1. identify classes: problem statement, nouns classes, verbs responsibilities
2. create a card for each class and assign it to a person in the group
3. perform system scenarios: identify collaboration and responsibilities