O'Reilly logo

Unified Modeling Language Reference Manual, The, Second Edition by Grady Booch, Ivar Jacobson, James Rumbaugh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

What Is in a Model?

Semantics and presentation. Models have two major aspects: semantic information (semantics) and visual presentation (notation).

The semantic aspect captures the meaning of an application as a network of logical constructs, such as classes, associations, states, use cases, and messages. Semantic model elements carry the meaning of the model—that is, they convey the semantics. The semantic modeling elements are used for code generation, validity checking, complexity metrics, and so on. The visual appearance is irrelevant to most tools that process models. The semantic information is often called the model. A semantic model has a syntactic structure, well-formedness rules, and execution dynamics. These aspects are often described ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required