Lecture 8- DomainModeling

Questions and Answers

What is a domain class?

A class that describes objects in the problem domain

What is the UML Domain Class Notation for attribute names?

Not capitalized and use camelback notation

What does a simple domain model class diagram depict?

Relationships between objects in the problem domain

What is a domain model class diagram?

A class diagram that only includes classes from the problem domain, not software classes so no methods Signup and view all the answers

What is the purpose of a domain model class diagram?

To visualize the classes in the problem domain and their relationships Signup and view all the answers

What is a class diagram in UML?

A diagram that shows classes with attributes and associations (plus methods if it models software classes) Signup and view all the answers

How are compound class names represented in UML Domain Class Notation?

Using camelback notation Signup and view all the answers

What does a domain model class diagram not include?

Software classes and methods Signup and view all the answers

What is a domain model class diagram used for?

To represent classes and their relationships in the problem domain Signup and view all the answers

What is the notation for class names in UML Domain Class Notation?

Always capitalized Signup and view all the answers

What is the key difference between composition and aggregation?

The child does not exist independently of its parent in composition, whereas in aggregation, the child is standalone Signup and view all the answers

What is a special form of association in UML class diagrams?

Aggregation Signup and view all the answers

What type of relationship is whole part relationship in UML class diagrams?

One class is a component or part of another class Signup and view all the answers

What is the purpose of an initial draft of the domain model class diagram in a project?

To guide development Signup and view all the answers

What does the UML class diagram notation represent?

Domain model class diagram for a system Signup and view all the answers

Which type of relationship is inheritance in UML class diagrams?

Generalization/specialization relationship Signup and view all the answers

What are domain model classes lacking?

Methods Signup and view all the answers

What is the key characteristic of whole part relationships in UML class diagrams?

One class is a component or part of another class Signup and view all the answers

What is the main purpose of the RMO CSMS Project Domain Model Class Diagrams?

To create a domain model for the system Signup and view all the answers

What is the key difference between association relationships and generalization/specialization relationships in UML class diagrams?

Association relationships represent connections between classes, whereas generalization/specialization relationships represent inheritance Signup and view all the answers

What does UML notation for multiplicity represent?

The relationship between instances of different classes Signup and view all the answers

When is an association class used?

In a many-to-many association to remember attributes Signup and view all the answers

How is the key for an association class formed?

By concatenating the keys of the attached classes Signup and view all the answers

What do generalization/specialization involve?

Hierarchical relationships where subordinate classes are special types of superior classes Signup and view all the answers

What does inheritance in generalization/specialization allow subclasses to do?

Inherit characteristics of the more general superclass Signup and view all the answers

What are abstract classes, concrete classes, and their attributes explained in the context of?

Inheritance for RMO and a bank with special types of accounts Signup and view all the answers

What are aggregation and composition in relation to association?

Subsets of association, each with distinct characteristics Signup and view all the answers

How is aggregation represented in UML notation?

With a diamond symbol Signup and view all the answers

What is the possibility of multiplicity symbols for in whole-part relationships?

Highlighting the number of parts related to a whole Signup and view all the answers

What do domain model class diagrams illustrate?

A bank with many branches and course enrollment at a university Signup and view all the answers

Study Notes

UML Notation and Class Diagrams in Systems Analysis and Design

UML notation for multiplicity represents the relationship between instances of different classes
Domain model class diagrams for a bank with many branches and course enrollment at a university are illustrated
An association class is used in a many-to-many association to remember attributes such as grades in a refined course enrollment model
The key for an association class is formed by concatenating the keys of the attached classes
In a hospital registration system, each ward has many medical histories, and each patient has many visits associated with a ward
The concept of generalization/specialization involves hierarchical relationships where subordinate classes are special types of superior classes
Inheritance in generalization/specialization allows subclasses to inherit characteristics of the more general superclass
Abstract classes, concrete classes, and their attributes are explained in the context of inheritance for RMO and a bank with special types of accounts
Whole-part relationships, such as aggregation and composition, are described with examples like a computer and its disk storage devices
Aggregation and composition are subsets of association, each with distinct characteristics
Notation for aggregation with a diamond symbol and the possibility of multiplicity symbols for whole-part relationships are highlighted
The text is from "Systems Analysis and Design in a Changing World, 7th Edition - Chapter 4" by Cengage Learning, 2016

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Test your knowledge of UML notation and class diagrams in systems analysis and design with this quiz. Explore concepts such as multiplicity, association classes, generalization/specialization, inheritance, and whole-part relationships. Gain a deeper understanding of these key principles through practical examples from various domains, including banking, education, and healthcare.