Kaz Remember these boy!!!! For Asssesment

Question 1

mention the point to consider when identifying classes .

Answer 1

retained information
needed services
multiple attributes
common attributes
common operations
essential requirements

Question 2

descibe the type of classes

Answer 2

entity class. represnts things stored in the database

boundary. cretes the interface that the user sees and interacts with. its made to present how entity objects are presented.

controller class.manage the unit work from start to finish.u can manage
- create or update objects.
-instantiate boundry class as they obtain from entity classses

Question 3

what is a crc card and draw one

Answer 3

top- class name
left- responsibilities. anything the class knows or does.
right - collaborators, these are classes that have info in order for a responsibity to be complete.

Question 4

cd modifiers

Answer 4

+ public
- private
protected(curvy minus)

Question 5

CD relationships and draw symbols

Answer 5

association
aggregation (unshaded diamond starts from whole class)
generalization (arrow pionting super class)
composition(shaded diamond)

Question 6

aggregation

Answer 6

the whole-part relationship between two classes where one class is considered a whole, made up of one or more classes comprising its parts.

Question 7

Composition

Answer 7

Another type of aggregation, in which the part classes used to make the whole class cannot exist on their own

Question 8

Generalization

Answer 8

Type of a relationship between a more general class and a specific class.

Question 9

Multiplicity

Answer 9

Shows how many objects of one class are related to objects of another class

Question 10

2 types of requirements classifications

Answer 10

Functional requirements describe system functions

Non-functional requirements are constraint on the system

Question 11

2 requirement documents

Answer 11

User requirements
Statements in natural language plus diagrams of the services the system provides and its operational constraints. Written for customers.

System requirements
A structured document setting out detailed descriptions of the system’s functions, services and operational constraints. Defines what should be implemented so may be part of a contract between client and contractor.

Question 12

describe an immutable class