Sequence diagram software engineering3/27/2023 The mentioned diagrams can be categorized as a hierarchy, including so called “interaction diagrams”, emphasizing the flow of data and control among the things in the system, which are being modelled. “UML 2” has many different types of diagrams, divided into two categories, representing both structural information and general types of behaviour, including some, which represent different aspects of different interactions. Using the “XML Metadata Interchange” format (widely known as simply “.xmi” one), which is an object management group standard, used for exchanging any metadata information via XML means enabling the UML models to be exchanged among UML tools. The last view includes composite structure diagrams as well as the class diagrams. At the same time, the static view insists on the static structure of the system using attributes, objects, relationships and operations. Thus, a dynamic view is used for showing the collaborations among different objects as well as changes to the internal states of such objects, which includes creating diagrams, such as “activity” ones, “state machine” ones and “sequence” ones. All the “UML diagrams” represent two different views of a system model, which is a dynamic (also known as “behavioural”) view and a static one (known as “structural”). At the same time, a model may also contain documentation that drives the model elements and diagrams, for example the “written use cases”. ![]() It is important to describe the UML model correctly, opposing it to the other diagrams of a system. The mentioned “UML” was extended to a larger set of design documentation, becoming very useful in many contexts, such as in software development, being designed to become compatible with the leading object-oriented software development methods, such as “Booch method”, “OMT” (object-modelling technique), so called “objectory” (or simply “object-oriented methodology”) and “RUP”, which is a Rational Unified Process - an iterative software development process framework created by the “Rational Software Corporation”. The elements of such diagram can be individual components of the system, activities or simply “jobs”, external user interface, with help of which it’s not a problem to represent the process of their interaction with other software components and follow the way the system can run as well as to see how the mentioned entities can interact with other components and interfaces. Unified Modelling Language (or simply “UML”) provides an opportunity to visualize a system's architectural blueprints in a diagram. In 2005 UML was also published by the well-known “ISO” (“International Organization for Standardization”) as an approved ISO standard, after what it was revised to cover the latest revisions. It was better developed by its “inventors” through 1996 and already in 1997 it was adopted as a standard by the so called “Object Management Group”, being managed by this organization ever since. Behavior diagrams: show how the components in the system react to each other, they capture how the system changes, and in some diagrams, how it changes over time.The definition of the Unified Modelling Language can be found in other articles on this site, but to remind about it, we can mention that it is basically one of the developmental, general-purpose as well as modelling languages widely used in software engineering for providing a standard way for visualizing the design of a system, being originally developed for standardizing the disparate notational systems as well as approaches to software design in 1994.Structure diagrams: show the static relationships between the components in the system. ![]() ![]() There are two main categories and 14 different types of UML diagrams, each of which is used in a different situation.
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