Recovery is a hard problem in environments where transactions perform work in a cooperative style (e.g., design environments). We propose concepts to control cooperation and recovery within nested transaction hierarchies. By allowing different nodes to run different protocols, we can build...

A steadily increasing number of researchers believes that so-called organizational multi agent systems are a key technology to support information and knowledge processing activities in cooperative, networked organizations. This, in turn, necessitates their integration with the underlying...

Today's enterprises are faced with highly dynamic, sometimes even hostile environments. This paper dicovers that the two most prominent organizational strategies addressing these challenges, namely that of widespread decentralization and of business process orientation, are inherently...

Several years ago optimistic concurrency control gained much attention in the database community. However, two-phase locking was already well established, especially in the relational database market. Concerning traditional database systems most developers felt that pessimistic concurrency...

Advanced database applications, such as CAD/CAM, CASE, large AI applications or image and voice processing, place demands on transaction management which differ substantially from those in traditional database applications. In particular, there is a need to support enriched data models (which...

Advanced database applications, such as CAD/CAM, CASE, large AI applications or image and voice processing, place demands on transaction management which differ substantially from those of traditional database applications. In particular, there is a need to support enriched data models (which...

Entwurfsumgebungen stellen besondere Anforderungen an das Transaktionsmanagement, so z.B. bei der Realisierung von Kooperations- und Recoverymechanismen. Hierbei ergibt sich ein Zielkonflikt: Einerseits soll das System größtmögliche Sicherheit garantieren, andererseits sollen Flexibilität...

Der Beitrag führt zunächst in neuere organisationstheoretische Arbeiten zur Organisatorischen Intelligenz ein. Diese setzen u.a. voraus, kognitive menschliche und maschinelle Arbeit durch entsprechenden Einsatz informationstechnischer Maßnahmen organisatorisch zu integrieren. Die...

Ausgehend von den Forderungen nach Markt- und Kundenorientierung, organisatorischer Reaktionsschnelligkeit, Flexibilität und Anpassungsfähigkeit wird derzeit in Wissenschaft und Praxis mit Hochdruck an der Entwicklung neuer organisatorischer Konzepte gearbeitet. In diesem Zusammenhang ist auch...