Category: Unified Modeling Language

Instead of writing hundreds of pages of documentation, it would be convenient to draw a few diagrams to show how it all works. UML diagrams keep the conversation focused, facilitate communication, allow less time to be wasted on explanations, and give more clarity to the problem. Thus, UML gives a standard approach to writing a system model that covers conceptual ideas. Through the understanding of modeling, the use and application of UML can make the software development process more effective.

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Class diagrams are useful in many phases of system design. During the analysis phase, class diagrams can help you understand the requirements of the problem domain and identify its components. In object-oriented software projects, the class diagram created in the early stages of the project contains classes that are often converted into actual software classes and objects when writing code.

A state-transition diagram presents a sequence of states that an object goes through during its lifecycle. It is used to describe the changes of states for an object or for a component.

The behavioral things is the dynamic part of the UML model. These are the verbs of a model. Represents actions in time and space. In general, there are two main kinds of behavioral things. (1) Interactions (2) state machines. They are the basic behavioral things that you may include in a UML model, typically the state machine diagram. Semantically, these elements are usually connected to various structural elements, primarily classes, collaborations, and objects.

State Machine Diagram Note from OMG State Machine Slides – Lecture Notes by B. Beckert  What is State Machine Diagram?