An activity diagram shows the overall flow of control. Activity diagram: describes the business and operational step-by-step workflows of components in a system.Use case diagram: describes the functionality provided by a system in terms of actors, their goals represented as use cases, and any dependencies among those use cases.
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Since behavior diagrams illustrate the behavior of a system, they are used extensively to describe the functionality of software systems. The extension relation (solid line with closed, filledĪrrowhead) indicates what metamodel element a given stereotype is extending.īehavior diagrams emphasize what must happen in the system being modeled. Profile diagram: operates at the metamodel level to show stereotypes as classes with the > stereotype, and profiles as packages with the > stereotype.Package diagram: describes how a system is split up into logical groupings by showing the dependencies among these groupings.Object diagram: shows a complete or partial view of the structure of a modeled system at a specific time.Deployment diagram: describes the hardware used in system implementations and the execution environments and artifacts deployed on the hardware.Composite structure diagram: describes the internal structure of a class and the collaborations that this structure makes possible.Component diagram: describes how a software system is split up into components and shows the dependencies among these components.Class diagram: describes the structure of a system by showing the system's classes, their attributes, and the relationships among the classes.Since structure diagrams represent the structure, they are used extensively in documenting the software architecture of software systems. Structure diagrams emphasize the things that must be present in the system being modeled. These diagrams can be categorized hierarchically as shown in the following diagram: This view includes sequence diagrams, activity diagrams and state machine diagrams.ĭiagrams OverviewIn UML 2.2 there are 14 types of diagrams divided into two categories. Seven diagram types represent structural information, and the other seven represent general types of behavior, includingįour that represent different aspects of interactions. Dynamic (or behavioral) view: emphasizes the dynamic behavior of the system by showing collaborations among objects and changes to the internal states of objects.The structural view includes class diagrams and composite structure diagrams. Static (or structural) view: emphasizes the static structure of the system using objects, attributes, operations and relationships.UML diagrams represent two different views of a system model: The model also contains documentation that drive the model elements and diagrams. A diagram is a partial graphic representation of a system's model. It is important to distinguish between the UML model and the set of diagrams of a system. It can be used with all processes, throughout the software development life cycle, and across different UML combines techniques from data modeling (entity relationship diagrams), business modeling (work flows), object modeling, and component modeling. Including elements such as activities, actors, business processes, database schemas, components, programming language statements, and reusable software components. The Unified Modeling Language (UML) is used to specify, visualize, modify, construct and document the artifacts of an object-oriented software-intensive system under development. UML offers a standard way to visualize a system's architectural blueprints, Jacobson joined Rational in 1995, after his company, Objectory AB, was acquired by Rational. They were soon assisted in their effortsīy Ivar Jacobson, the creator of the object-oriented software engineering (OOSE) method. Modeling approaches of the day: Rumbaugh's Object-modeling technique (OMT), which was better for object-oriented analysis (OOA), and Grady Booch's Booch method, which was better for object-oriented design (OOD). After Rational Software Corporation hired James Rumbaugh from General Electric in 1994, the company became the source for the two most popular object-oriented HistoryUML was invented by James Rumbaugh, Grady Booch and Ivar Jacobson. The Unified Modeling Language is a standardized general-purpose modeling language and nowadays is managed as a de facto industry standard by the Object Management Group (OMG). UML includes a set of graphic notation techniques to create visual models
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