Unified Process - Analysis Behavioural and Structural Modelling

Question 1

What are the two types of representing a view of a system model? UML

Answer 1

• Static view [Structural]: emphasizes the static structure of the system using objects, attributes, operations and relationships.
• Dynamic view [ Behavioral]: emphasizes the dynamic behavior of the system by showing collaborations among objects and changes to the internal states of objects.

Question 2

During the life of a project using an iterative life cycle, models change along the dimensions of:

Answer 2

• abstraction: they become more concrete
• formality: they become more formally specified
• level of detail: additional detail is added as understanding improves

Question 3

What is a use-case?

Answer 3

It describes functions performed by users of a system (One and only one function). It’s usually a diagram supported with a description.

Question 4

What is the main goal of structural modelling?

Answer 4

Structural models represent system objects; their relationships People, Places, Things. Its main goal is to discover the key data contained in the problem domain and to build a structural model of the object.

Question 5

“Objects have state, behavior and identity.” Define those properties.

Answer 5

• State:the condition of an object at any moment, affecting how it can behave
• Behavior: what an object can do, how it can respond to events and stimulation
• Identity: each object is unique

A bicycle -> MTB -> move, stop -> new, second hand

Question 6

What is a class?

Answer 6

A class is a description of a set of objects with similar features: semantics; constraints.

All objects are instances of some class and are similar in:

• structure (what information they hold, what links they have to other objects)
• behavior (what they can do)

A class diagram is a static model that shows classes and their relationships to one 
another

Question 7

Types of relationships.

Answer 7

• Generalization: Represents relationships that are a-kind-of
• Aggregation: Represents relationships that are “a-part-of”
• Association: Represents relationships that are “linked-to”

Question 8

What are behavioral models?

Answer 8

They are behavioral state machine diagrams(show how data change throughout the process) and interaction diagrams (Sequence and communication-> show how object interact to provide functionality in the use cases)

Question 9

What are sequence diagrams? Figure.

Answer 9

They emphasize message sequence. By illustrating the object that participate in a single use-case

Question 10

What are communication diagrams? Figure.

Answer 10

They emphasize message flow. An object diagram that show message passing relationships.