The Unified Modeling Language (UML) is a general-purpose, developmental, modeling language in the field of software engineering, that is intended to provide a standard way to visualize the design of a system.
Please watch this linked youtube video for a friendly introduction to UML.
A UML class diagram describes the object and information structures used by your application, both internally and in communication with its users. It describes the information without reference to any particular implementation. Its classes and relationships can be implemented in many ways, such as database tables, XML nodes, or compositions of software objects.
- Please review this handout on UML
- Please review this excellent resource on UML
- Please review this example page of UML diagrams
A helpful video