文档介绍：附录:B
OMG Unified Modeling Language Specification
Preface
About the Unified Modeling Language (UML)
The Unified Modeling Language (UML) provides system architects working on object analysis and design with one consistent language for specifying, visualizing, constructing, and documenting the artifacts of software systems, as well as for business modeling.
This specification represents the convergence of best practices in the object-technology
industry. UML is the proper essor to the object modeling languages of three previously
leading object-oriented methods (Booch, OMT, and OOSE). The UML is the union of these
modeling languages and more, since it includes additional expressiveness to handle modeling problems that these methods did not fully address.
One of the primary goals of UML is to advance the state of the industry by enabling object visual modeling tool interoperability. However, in order to enable meaningful exchange of model information between tools, agreement on semantics and notation is required. UML meets
the following requirements:
• Formal definition of mon object analysis and design (OA&D) metamodel to represent
the semantics of OA&D models, which include static models, behavioral models, usage
models, and architectural models.
• IDL specifications for mechanisms for model interchange between OA&D tools. This
document includes a set of IDL interfaces that support dynamic construction and traversal of
a user model.
• A human-readable notation for representing OA&D models. This document defines the
UML notation, an elegant graphic syntax for consistently expressing the UML’s rich
semantics. Notation is an essential part of OA&D modeling and the UML.
About the Object Management Group (OMG)
The Object Management Group, Inc. (OMG) is an anization supported by over 800 members, including information system vendors, software developers and users. Founded in 1989, the OMG promotes the theory and practice of object-oriented techn