Das Buch "Datenbanksysteme" von Alfons Kemper wurde durch seinen uberragenden didaktischen Aufbau und eine verstandliche Aufbereitung des komplexen Stoffen zu einem absoluten Klassiker im Lehrbuchbereich. Die Autoren geben Ihnen nun ein Ubungsbuch an die Hand, in dem die Losungen zu den im Buch vorgestellten Ubungsaufgaben gezeigt und erklart werden. Umfangreiche Download-Materialien erganzen die Buchinhalte und geben Ihnen die Moglichkeit, den Stoff zu verinnerlichen."

Service-oriented architectures provide high levels of inter-operability and high means of adaptability. Nevertheless, distributed service-based business processes demand for robust, flexible and - bearing scalability in mind - efficient security mechanisms. This book presents access control models and procedures for intra- and inter-organizational service compositions. It introduces a framework for distributed access control in Web service federations and highlights optimizations through the consolidation of security policies and the caching of access control information. In combination, these concepts enable efficient and reliable access control for current and upcoming service-oriented architectures. As the presented techniques build up on prevalent security standards like WS-Security and XACML, application developers, system designers, and security experts will be able to seamlessly transfer them to their particular Web service-based projects.

This book is an anthology that focuses on topics of Intercultural Philosophy. Its main goal is to offer new impulses and important contributions to all discourses, discussions and researches on (other) cultures. The importance of Intercultural Philosophy seems to be obvious in a globalized world. Eleven authors participated in such a common research on cultural differences and peculiarities. Together they discuss four topics: concepts of a general approach of Intercultural Philosophy, the relationship of universalism and cultural differences, different methods, and certain cultural peculiarities. The contributions express that Intercultural Philosophy is not just a single question of philosophy. Instead it concerns philosophy in general, its possibilities, borders and main tasks.