The Unified Modeling Language Reference Manual,

The recently-released UML 2.0 specification is much less readable than the original UML 1.1 specification. The UML has grown more complex, and therefore, the need for a thorough reference book from the creators of the language is more pronounced than it was when the first edition was published more than five years ago. This timely second edition has been thoroughly revised, expanded, and updated to reflect the intricacies of the latest version of UML. The authors have incorporated feedback from the first edition. Significant changes include revisions in the area of sequence diagrams, activity models, action models, protocol state machines, components, internal structure of classes and components, and profiles. The result is a thoroughly useful reference that is completely up-to-date and essential to any software practitioner who needs to understand the inner-workings of the industry standard modeling language.