CS2002 - Week 3 - Class Diagram I

Question 1

object

Answer 1

Instance of a class, Individuals of a system that have similar characteristics and behaviours

Question 2

class

Answer 2

A construction plan for a set of similar objects of a system

Question 3

attribute

Answer 3

Structural characteristics of a class

Question 4

operation

Answer 4

Behaviour of a class

Question 5

+ symbol

Answer 5

public access to the attribute (everybody)

Question 6

dash (-) symbol

Answer 6

private access to the attribute (only the object itself)

Question 7

hashtag (#) symbol

Answer 7

protected access (class itself and subclasses)

Question 8

~ symbol

Answer 8

packaged access (classes that are in the same package)

Question 9

{readOnly}

Answer 9

attribute value cannot be changed

Question 10

{unique}

Answer 10

no attribute duplicates are permitted

Question 11

{non-unique}

Answer 11

attribute duplicates are permitted

Question 12

{ordered}

Answer 12

attributes are fixed in order of the values

Question 13

{unordered}

Answer 13

attributes have no fixed order of the values

Question 14

in

Answer 14

An input value is expected from this parameter

Question 15

out

Answer 15

The parameter has adopted a new value, output

Question 16

inout

Answer 16

Combined input/output parameter

Question 17

instance variable

Answer 17

Variables that belong to an individual instance or object of a class

Question 18

class variable

Answer 18

Variables that belong to the class itself, not to individual instances

Question 19

class operation

Answer 19

An operation/method that belongs to the class itself rather to individual instances of that class

Question 20

association

Answer 20

Possible relationships between instance of classes

Question 21

multiplicity

Answer 21

Number of objects that may be associated with exactly one object of the opposite side

Question 22

binary association

Answer 22

Represents a relationship between exactly two classes

Question 23

role

Answer 23

Describes the way in which an object is involved in an association relationship

Question 24

n-ary association

Answer 24

Relationship between n classes

Question 25

association class

Answer 25

More detailed description of an association

Question 26

xor relationship

Answer 26

An object of C is in a relationship with either object of A or B but not both