Nowadays, newly developed software packages are often obsolete already at the time of their introduction. Object-oriented software development is a possible?if not the only?solution to this dilemma: applications are modeled as software objects that describe the properties and the behavior of real-world entities. Such objects are encapsulated, in that they hide?behind a publicly known interface?the complexity of their internal data structures and behaviors. This enables objects to be used in a wide range of program packages without needing to know the details of their internal implementation.Linking object-oriented modeled applications with a database places special demands on a database management system and development environment when the usual performance and semantics losses are to be avoided. This book provides a detailed description of the object model of the Cache postrelational database. This second, revised and expanded edition includes the many new features of Cache 5. There is a comprehensive description of the new Cache Studio with its improvements for developing and debugging applications as well as a whole new chapter about XML and SOAP based Web Services. The chapters about Java, ActiveX and the SQL manager have undergone a complete revision. The accompanying CD-ROM contains the complete associated software as well as a searchable PDF version of the book.System requirementsPC with Intel CPU (Pentium or better), Windows 95, 98, ME, NT 4.0 (SP4, 5 or 6), 2000 (SP2) or XP, 128 MB main memory, 100 MB free disk space, CD-ROM drive.