L5: Domain Case Modelling

Question 1

ERD

Answer 1

Items/things are entities
Entity relationships are shown with a relationship line
Constraints are shown with cardinality symbols
Use for database

Question 2

Domain Class Diagram

Answer 2

Items/things are classes
Classes are related with an association line
Constraints are shown with multiplicity symbols
Used for OOP

Question 3

Multiplicity

Answer 3

Multiplicity is used in a domain class diagram to show the constraints and relationships between classes

Question 4

UML Notation for Multiplicity

Answer 4

0..1 Zero or one (optional)
1 One and only one
1..1 One and only one alternate (mandatory)
0..* Zero or more (optional)
* Zero or more alternate (optional)
1.. One or more (mandatory)

Question 5

Design Class Diagram

Answer 5

A design class diagram is a domain class diagram with additional, more detailed information.
More attributes
Operations (Methods)
Visibility indicators (+, -, #)
Data types

Question 6

Visibility indicators

Answer 6

+ public
- private
# protected