VI. System Analysis (2)

Question 1

(Class Diagram) gen / spec: Basic Principle

relationship: specialized element - general element

draw

Answer 1

5-8

Question 2

(Class Diagram) gen / spec: super - sub class

• subclasses derive … (3)
• subclasses may … (3)
• subclasses are not allowed to …

Answer 2

5-9

Question 3

(Class Diagram) gen / spec:

• set theory: instance of the subclass –> superclass?
• IS_A relationship –> read
  A = gen(B)
  A = spec(B)

Answer 3

5-10

Question 4

when a class is called being multiple generalized?

draw (xem 5-12B)

Answer 4

5-12

Question 5

what is abstract class? (3) –> UML Notation?

Answer 5

5-15

Question 6

• what is abstract operation? (2) –> UML Notation?
• what happens when a class has at least 1 abstract operation?
• when is a model sound?

Answer 6

5-15

Question 7

may a class override operations of its superclass? Example

Answer 7

5-17

Question 8

what is Polymorphism? How does Polymorphism work?

Answer 8

5-18, 19

Question 9

what are Derived Elements? UML Notation

Answer 9

5-28

Question 10

• what does a Package do? How to create package?
• Relationship between packages and their elements. Access rules (2)
• UML Notation –> draw

Answer 10

5-36, 37

Question 11

relationship among packages (3)

Answer 11

5-38

Question 12

how to find packages? (2)

Answer 12

5-39

Question 13

class - instance - packages diagram

• show
• describe

Answer 13

5-40

Question 14

Object Oriented Class Models: Pros (7) - Con (2)

Answer 14

5-45

Question 15

Entity Relationship Models: goal (2), basic concepts, result

Answer 15

5-47

Question 16

Entity Relationship Models - Object Oriented Modeling –> difference? (2)

Answer 16

5-48

Question 17

ERM Diagram –> how to display:

• Entity Set
• Attribute / Property
• Key Attribute
• Relationship Type
• Relationship (1:1, 1:n - n>=1, optional, 1:n - n>=0)
• aggregation
• gen / spec

Answer 17

5-49 - 54

Question 18

what is key attribute? (5)

Answer 18

5-50

Question 19

(ERM) what do generalization type and specialization type have to have?

Answer 19

5-54

Question 20

what is Data dictionary?

Answer 20

5-57

Question 21

Data dictionary notation

• sequence –> imply an order?
• selection (XOR)
• iteration (arbitrary)
• iteration (m to n)
• option

Answer 21

5-58

Question 22

(ERM) Pros (6), Cons (2)

Answer 22

5-61

Question 23

what is Scenario? (2) –> Example. How can the behavior of a system during a scenario be described?

Answer 23

5-64, 65

Question 24

Characteristics of an Interaction (3)

Answer 24

5-65

Question 25

Interaction UML notation: Interaction Frame (5)

Answer 25

5-66

Question 26

what are external (2) and internal (3) view of scenario?

Answer 26

5-67

Question 27

Sequence Diagram –> display:

• interaction partners
• life period
  o lifeline
• virtual timeline –> vertically from … to …
• communication between lifelines
• activity bar

Answer 27

5-69, 70

Question 28

(Interaction Diagrams)

• what happen during synchronous messaging? (2)
• UML Notation for synchronous message, reply, Asynchronous message

Answer 28

5-72, 73

Question 29

what is Asynchronous message in Interaction Diagrams (5)

Answer 29

5-73

Question 30

Exemplary (2) vs. Generic scenarios (4)

Answer 30

5-76

Question 31

what is Combined Fragments? Goal of Combined Fragments? Notation

Answer 31

5-77, 78

Question 32

Communication Diagrams:

• virtual timeline?
• UML Notation: interaction partner, message –> draw

Answer 32

5-80 - 83

Question 33

Communication Diagrams:

• what is unidirectional and bidirectional connector?
• what do unidirectional edges allow?

Answer 33

5-83

Question 34

• do Communication Diagrams represent time flow?

- How to show order of message? (2)

Answer 34

5-84

Question 35

Communication Diagrams:

• guard condition (2)
• iteration mark (2) –> mark?

Answer 35

5-86, 87

Question 36

Sequence Diagrams: Pros (2), Cons (2)

Answer 36

5-88

Question 37

Communication Diagrams: Pros (3), Cons (2)

Answer 37

5-88