Following up on their bestselling book, UML Toolkit, Hans-Erik Eriksson and Magnus Penker now provide expert guidance on how to use UML to model your business systems. In this informative book, key business modeling concepts are presented, including how to define Business Rules with UML"s Object Constraint Language (OCL) and how to use business models with use cases. The authors then provide 26 valuable Business Patterns along with an e-business case study that utilizes the techniques and patterns discussed in the book. Visit our Web site at www.wiley.com/compbooks/