the Class; often to implement Collections of any Type Thread - a sequence of instructions whose execution is being scheduled by the Operating System and may run in parallel with other threads Timing Diagram Token - symbolises the Thread of an Activity diagram Transition - 1. movement from one State to another in a State machine diagram. The transition is specified by its Trigger-signature [Guard]/Activity 2. a relationship between two states indicating that when a specific event occurs and specific conditions are satisfied an object in the first state will perform certain actions and enter the second state. Type - the options are: an elementary Value type such as integer, string, date, or Boolean or a Reference type defined in a Class U Use case - A use case can be defined as a sequence of actions, including variations, that the system can execute and that produce an observable result which has some value for an actor that interacts with the system Use case diagram Uses dependency - V Visibility - the availability for access of elements in a model. Typically used to limit the visibility of features defined by a Class (e.g., attributes, operations). When applied to features defined by a class, the standard options are: private (-): available only within the Class in which it was defined. This is the most limited visibility protected (#): available within any subclass of this class and within the package which directly contains the defining Class package (~): available only within the Package which directly contains the defining Class public (+): available to any Class that can see the defining Class. This is the least limited visibility. W Workflow - Set of sequential steps which must be done to get a job done X XMI - An OMG standard for exchanging metadata information via Extensible Markup Language (XML). xUML - an UML profile or generic extension mechanism for customizing Unified Modeling Language (UML). See also Automatic programming Class-Responsibility-Collaboration card (CRC) Data mapping Data transformation Domain Specific Language (DSL) Domain-specific modelling (DSM) Eclipse GMT Project Generative programming (GP) Intentional Programming (IP) KM3 Language oriented programming (LOP) List of UML tools Model-based testing (MBT) Model Driven Engineering (MDE) Model Transformation Language (MTL) Modeling language Modeling perspectives MOF Queries/Views/Transformations (QVT) Object-oriented analysis and design (OOAD) Semantic spectrum Semantic translation Software factory Transformation language (TL) UML UML tool Vocabulary-based transformation XML transformation language (XTL) Sources Unified