The emergence of Web 2.0 is provoking challenging questions for developers: What products and services can our company provide to customers and employees using Rich Internet Applications, mash-ups, Web feeds or Ajax? Which business models are appropriate and how do we implement them? What are best practices and how do we apply them? If you need answers to these and related questions, you need Unleashing Web 2.0—a comprehensive and reliable resource that guides you into the emerging and unstructured landscape that is Web 2.0. Gottfried Vossen is a professor of Information Systems and Computer Science at the University of Muenster in Germany. He is the European Editor-in-Chief of Elsevier's Information Systems—An International Journal. Stephan Hagemann is a PhD. Student in Gottfried's research group focused on Web technologies. - Presents a complete view of Web 2.0 including services and technologies - Discusses potential new products and services and the technology and programming ability needed to realize them - Offers 'how to' basics presenting development frameworks and best practices - Compares and contrasts Web 2.0 with the Semantic Web

Transactional Information Systems is the long-awaited, comprehensive work from leading scientists in the transaction processing field. Weikum and Vossen begin with a broad look at the role of transactional technology in today's economic and scientific endeavors, then delve into critical issues faced by all practitioners, presenting today's most effective techniques for controlling concurrent access by multiple clients, recovering from system failures, and coordinating distributed transactions.The authors emphasize formal models that are easily applied across fields, that promise to remain valid as current technologies evolve, and that lend themselves to generalization and extension in the development of new classes of network-centric, functionally rich applications. This book's purpose and achievement is the presentation of the foundations of transactional systems as well as the practical aspects of the field what will help you meet today's challenges. - Provides the most advanced coverage of the topic available anywhere--along with the database background required for you to make full use of this material. - Explores transaction processing both generically as a broadly applicable set of information technology practices and specifically as a group of techniques for meeting the goals of your enterprise. - Contains information essential to developers of Web-based e-Commerce functionality--and a wide range of more "traditional" applications. - Details the algorithms underlying core transaction processing functionality.

This book provides a comprehensive treatment of the rapidly changing world of Web-based business technologies and their often-disruptive innovations. The history of the Web is a short one. Indeed many college graduates today were not even born when the Web first emerged. It is therefore an opportune time to view the Web as having reached the point of graduation. The Web has led to new ways in which businesses connect and operate, and how individuals communicate and socialize; related technologies include cloud computing, social commerce, crowd sourcing, and the Internet of Things, to name but a few. These developments, including their technological foundations and business impacts, are at the heart of the book. It contextualizes these topics by providing a brief history of the World Wide Web, both in terms of the technological evolution and its resultant business impacts. The book was written for a broad audience, including technology managers and students in higher education. It is also intended as a guide for people who grew up with a background in business administration or engineering or a related area but who, in the course of their career paths, have reached a point where IT-related decisions have become their daily business, e.g., in digital transformation. The book describes the most important Web technologies and related business applications, and especially focuses on the business implications of these technologies. As such, it offers a solid technology- and business-focused view on the impact of the Web, and balances rules and approaches for strategy development and decision making with a certain technical understanding of what goes on “behind the scenes.”

After a brief introduction to the topic of business process modeling, the book offers a quick-start into model-based business process engineering. After that, the foundations of the modeling languages used are conveyed. Meaningful examples are in the foreground - each of the underlying formalisms is treated only as far as needed. Next the Horus Method is described in detail. The book defines a sequence of activities which finally leads to the creation of a complete business process model. The Horus Method, incidentally, is not bound to the use of the Horus software tools. It can be used with other tools or, if necessary, be used even without tool support. Important application fields of business process engineering are described, where the spectrum ranges from business process reengineering to the development and implementation of information systems. The book concludes with an outlook on the future of business process engineering and highlights current research activities in the area.

This book constitutes the refereed proceedings of the Second East European Symposium on Advances in Databases and Information systems, ADBIS '98, held in Poznan, Poland in September 1998. The 25 revised full papers presented were selected from a total of 90 submissions and six extended abstracts within a special section. "East meets West". The papers are organized in topical sections on query languges, optimization, collaborative systems, schema integration, storage and version management, object systems, knowledge discovery and the Web, and systems design.

This book constitutes the refereed proceedings of the Second East European Symposium on Advances in Databases and Information systems, ADBIS '98, held in Poznan, Poland in September 1998. The 25 revised full papers presented were selected from a total of 90 submissions and six extended abstracts within a special section. "East meets West". The papers are organized in topical sections on query languges, optimization, collaborative systems, schema integration, storage and version management, object systems, knowledge discovery and the Web, and systems design.

Brings together key developments in OO databases from areas such as semantic modelling, formal data models, language design issues, object algebra and rule-based query languages. Shows how these elements may interact within an object-oriented database system.

lungen das passende Werkzeug findet. Wir versuchen daher, die Ausführungen und Entwicklungen stets von den Anwendungen her zu motivieren, und wir bemühen uns, Fragestellungen, zu denen die Automatentheorie ein Werkzeug liefert, dann auch mit diesem anzugehen. Im Vergleich zu anderen Theorie-Lehrbüchern stehen somit also nicht nur die Präsentation der grundlegenden Begriffe der Theoretischen Informatik und deren Analyse im Mittelpunkt des Buches, sondern insbesondere auch die Kon struktion von Problemlösungen. Naturgemäß endet das nicht in Komplettlösungen, aber die Leserschaft wird nahe genug an solche herangeführt. Inhaltlich folgen wir einem klassischen Präsentationsschema des Stoffes, welches vielfach in Lehrbüchern und Kursen bewährt ist: vom einfachen Automaten zum kom plizierteren. Wir beginnen also mit endlichen Automaten und regulären Sprachen und arbeiten uns von dort die Chomsky-Hierarchie"hinauf" und schließen mit den Themen Berechenbarkeit und Komplexität. Dieser Strang wird laufend durch Anwendungen und Anwendungsbeispiele begleitet, denn diese sollen nicht erst dann behandelt wer den, wenn die Theorie eingigermaßen komplett vorgestellt und durchgearbeitet ist. Münster und St. Augustin, im März 2000 G.V. und K.U.W. Vorwort zur 2. Auflage In der zweiten Auflage wurde eine Reihe von kleineren Fehlern verbessert; für Hin weise auf solche danken wir insbesondere unserem aufmerksamen Leser Dirk Hofmann. Darüber hinaus haben wir an verschiedenen Stellen Überarbeitungen vorgenommen und das Literaturverzeichnis aktualisiert.