Week 2.2

Question 1

What is a Model?

Answer 1

A model is simplification of reality.

A model is a map that guides us in solving wicked software problems

Question 2

How do models contribute to Software Engineering?

Answer 2

Visualize the system
Specify the structure and behaviour
Guides us in construction of the system
Communicate the decision we make / have made

Question 3

What is a system in modeling?

Answer 3

A system is a collection of subsystems described by a set of models from different viewpoints?

Question 4

What is a subsystem?

Answer 4

Is a grouping of elements some of which constitute a specification of behavior

Question 5

What is a model in modeling concepts?

Answer 5

A model is semantically closed abstraction of a system

Question 6

What is a view?

Answer 6

A view is a projection into the organization and structure of a system’s model, focused on one aspect of that system

Question 7

What is a diagram?

Answer 7

A diagram is the graphical presentation of a set of things connected through relationships

Question 8

What is UML?

Answer 8

Stardardized graphical language for creating software models:
Visualize, specify, construct

Question 9

What kind of language is UML?

Answer 9

It is a specification language

Question 10

What is a specification language?

Answer 10

Specifying means building models that are precise, unambiguous and complete

Question 11

What is a construction language?

Answer 11

Forward engineering - the generation of code from a model

Reverse-Engineering tools can help generate discover and/or update models from code

Question 12

Levels of Abstraction with UML?

Answer 12

Conceptual Level
Specification Level
Implementation Level

Question 13

What is Conceptual Level?

Answer 13

Analysis and modeling of the problem domain for the purpose of understanding and defining the problem to be solved.
Used to create domain models that are solution independent

Question 14

What is Specification Level?

Answer 14

Diagrams describe platform/language independent software abstractions

Question 15

What is Implementation Level?

Answer 15

Diagrams describe software implementation that are language and platform specific

Question 16

What are UML building blocks?

Answer 16

Things
Relationships
Diagrams

Question 17

What are Things?

Answer 17

Structural things are collectively called classifiers
Behavioural things are the dynamic elements of UML
Grouping things organize things and behaviour
Annotational things are explanatory elements of the model

Question 18

What is a relationship?

Answer 18

Relate things to each other allowing them to communicate and use each other

Question 19

What are diagrams?

Answer 19

Visualize meaningful groups of things to communicate a modeling intent

Question 20

Types of UML Diagrams?

Answer 20

Structural Diagrams

Behavioural Diagrams

Question 21

Structural Diagrams?

Answer 21

Class Diagram
Object Diagram
Package Diagram
Component Diagram
Deployment Diagram
Composite Structure Diagram
Profile Diagram

Question 22

Behavioural Diagrams?

Answer 22

Use-case diagram
Activity diagram
State Machine diagram
Interaction Diagram
Sequence Diagram
Communication Diagram
Interaction Overview Diagram