target objects, association objects, or some a derived attribute of the target or association objects. R Realization - Realization shows the relationship between an Interface and the class that provides the implementation for the interface. Reference - Request - The input to the system for finding the related abstracts from different operations (Add, Del, Mod, Inq.). Request could be for only one for every operation Response - The output of the "Request". Response could be 1 or more for a single request. Relation - Return - a reply that may be issued from a Method following a Message Role - description of the part played in an Association by one of the Classes in the Association S Scenario - a narrative describing foreseeable interactions Self-call - a Message from an Object to one of its own Methods Sequence diagram - describes the Messages sent between a number of participating Objects in a Scenario Signal - an Event which can occur in an Activity diagram in three different ways: as a Time Signal, as a signal which an Activity can listen for and a signal which an Activity can send State - an Object exists at one of the States described in a State machine diagram. A state encompasses all the properties of the object along with the values of each of these properties. State diagram - synonym for State machine diagram State machine diagram - describes the lifetime behaviour of a single Object in terms of in which State it exists and the Transition between those States Static attribute - an attribute that does not relate to a specific object but is at class level; that is, an attribute that is common among all objects of that class Static modeling - use of class diagrams to describe structure Static operation - an operation that does not relate to a specific object but is at class level Stereotype - a notation allowing the extension of UML symbols. Some are defined within Profiles. Examples of predefined UML stereotypes are Actor, Exception, Powertype and Utility. Structure diagram Superstate - construct allowing several States which share common Transitions and Internal Activities Swim lane - synonym for Partition System model - The logical UML model being represented through one or more UML diagrams T Tagged values - In extensibility Template - a Class that accepts a compile-time parameter defining the Type to be used within