UML Osztálydiagramok és CRC Kártyák

CRC Cards

• CRC cards are used to define classes without diagrams, rather via tables.
• They are applicable during code repair in UML.
• Only methods should be mentioned during the description.
• Descriptions should include responsibilities assigned to classes, not attributes or methods.

Phases of Creating Class Diagrams

• Analysis class diagrams
• Collaboration class diagrams
• Design class diagrams
• Class diagrams for design patterns
• Implementation class diagrams
• Runtime class diagrams

Interpreting UML Class Diagram Lines

• Cooperation
• Association
• Aggregation
• Composition

UML Class Diagram Notations for Multiplicity

• 0..1
• *..0
• 0..*
• 5
• 0..3
• The multiplicity is not represented by numbers.

Class Diagram Concepts

• Class diagram represents the conceptual vocabulary.
• Class Diagram representation using a rectangle with three sections: class name, attributes, and methods (operations).
• Abstract class does not have instances.
• Entity class a class which is important to the user.
• Boundary class is a class representing a user interface or boundary with the outside world.
• Component the class that represents a part of a system or software.
• Use case a short description on how a class or component can be used for various tasks by the end user.
• Use case diagram visualises how actors use use cases.
• Class diagram can be complemented with use case diagrams.
• UML (Unified Modeling Language) is an object-oriented analysis and design language.

Class Diagram notational elements

• Use Case represented as an oval.
• Component represented as a rectangle.
• Interface represented as an ellipse.
• Class represented using a rectangle with compartments.
• Multiplicity is the number of instances of an attribute.
• Association represented by a line between classes.
• Aggregation represented by a hollow diamond.
• Composition represented by a filled diamond.
• Generalization represented by a line with a hollow triangle at the general class.

Ez a kvíz a UML osztálydiagramok és CRC kártyák különböző aspektusait vizsgálja. A kérdések kitérnek a diagramok létrehozásának fázisaira, a kommunikáció jelöléseire, valamint a sokszínűségre vonatkozó megjegyzésekre. Ismerd meg az osztályok felelősségét és a különböző diagramtípusokat!