Classifier (UML)

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A classifier is a category of UML elements that have some common features, such as attributes or methods.

A classifier is an abstract metaclass classification concept that serves as a mechanism to show interfaces, classes, datatypes and components.

A classifier describes a set of instances that have common behavioral and structural features (operations and attributes, respectively).

A classifier is a namespace whose members can specify a generalization hierarchy by referencing its general classifiers.

A classifier is a type and can own generalizations, thereby making it possible to define generalization relationships to other classifiers.

A classifier is a redefinable element, as it is possible to redefine nested classifiers.

All objects that can have instances are classifiers.

[edit] Important Aspects

[edit] Types of UML Classifiers

[edit] Predefined UML classifiers

Unified Modeling Language (UML) (category)view  talk  edit )
Background

Organizations: Object Management Group (OMG) • UML Partners

Persons: Grady Booch • Ivar Jacobson • James Rumbaugh 

Concepts

Object oriented: programming (OOP) • analysis and design (OOAD)

Structure: Actor • Attribute • Class • Component • Interface • Object • Package 

Behavior: Activity • Event • Message • Method • Operation • State • Use case 

Relationships: Aggregation • Association • Composition • Dependency • Generalization (or Inheritance

Extensibility: Profile • Constraint • Stereotype • Tagged values 

Other concepts: Multiplicity • Role 

Diagrams

Structure diagrams
Class diagram • Component diagram • Composite structure diagram • Deployment diagram • Object diagram • Package diagram 

Behavior diagrams
Activity diagram • State Machine diagram • Use case diagram • Communication diagram • Interaction overview diagram • Sequence diagram • Timing diagram 

Topics

Compared to relational database model (ERD) • Glossary of UML terms • Systems Modeling Language (SysML) • UML colors:

Role Moment, Interval Description Party, place, thing
Tools(category) and Processes

List of UML tools • Rational Unified Process (RUP)

Languages