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In software engineering, a class diagram [1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.
These diagrams can be categorized hierarchically as shown in the following class diagram: [6] Hierarchy of UML 2.2 Diagrams, shown as a class diagram. These diagrams may all contain comments or notes explaining usage, constraint, or intent.
UML class diagram. The abstract factory pattern in software engineering is a design pattern that provides a way to create families of related objects without imposing their concrete classes, by encapsulating a group of individual factories that have a common theme without specifying their concrete classes. [1]
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Reading a communication diagram involves starting at message 1.0, and following the messages from object to object. Communication diagrams show much of the same information as sequence diagrams, but because of how the information is presented, some of it is easier to find in one diagram than the other.
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