Chapter 9, Problem 84E

Explanation of Solution

Class Responsibility Collaboration (CRC) card for zoo database:

Brainstorming stage:

• The initial stage of the design methodology is the brainstorming stage.
• It is used to determine the problem to create a list of classes to solve the particular problem.
• Brainstorming for class requires that all participants must know about the problem before its starts; then only the participants will solve the problem in clear manner.
• The problem to design the zoo database.
  • To create a list of classes for the zoo database.
  • The classes are related to the zoo database such as animal name, cage number, animal family name, data of birth, sex of animal, date brought, food.

animal_name cage_number animal_family_name date_of_birth sex date_brought food

Filtering stage:

• The second stage of the design methodology is the filtering stage.
• The brainstorming is the first state which creates two classes of list for the same process.
• Then filtering stage will analyze the list of classes produced by the brainstorming stage.
• The problem to design the zoo database.
  • To filter out the classes from a list of classes for the zoo database.

animal date_of_birth cage_number list_of_animal food_for_animal sex animal_name

Scenarios stage:

• The third stage of the design methodology is the scenario stage.
• It determines the behavior of each classes in the list.
• The behavior is referred to as the responsibilities because each class is responsible for its behavior.
• The problem to design the zoo database.
  • To design the CRC cards from the listed filtered classes for the zoo database...