All design documents, written in the Unified Modeling Language (UML), given along with some expert advice that is useful to create a better design documents and components. Judging from the evidence here, Catalysis design method can offer some real advantages to the current software, which often must evolve to meet unforeseen needs (international markets or new platforms like the Web). Designed in accordance with the principles outlined in the book components, and design can offer a higher level again. Even if you do not actually adopt the Catalysis, this authoritative and fascinating book offers a wealth of design expertise is clear to anyone who is interested in becoming more productive with objects and UML.