Learn More
Advanced non-traditional application domains such as geographic information systems and digital library systems demand advanced data management support. In an effort to cope with this demand, we present a novel multi-model DBMS architecture which provides efficient evaluation of queries on complexly structured data. A vital role in this architecture is(More)
♣ ♣ ♣ ♣ Nowadays, many organizations form dynamic partnerships to deal effectively with market requirements. As companies use automated workflow systems to control their processes, a way of linking workflow processes in different organizations is useful in turning the cooperating companies into a seamless operating virtual enterprise. The CrossFlow Esprit(More)
In this paper, we present an approach to global transaction management in workflow environments. The transaction mechanism is based on the well-known notion of compensation , but extended to deal with both arbitrary process structures to allow cycles in processes and safepoints to allow partial compensation of processes. We present a formal specification of(More)
Workflow management applications require advanced transaction management that is not offered by traditional database systems. For this reason, a number of extended transaction models has been proposed in thepast. None of these models seems completely adequate, though, because workflow management requires different transactional semantics on different(More)
Workflow management systems require advanced transaction support to cope with their inherently long-running processes. The recent trend to distribute workflow executions requires an even more advanced transaction support system that is able to handle distribution. This report presents a model as well as an architecture to provide distributed advanced(More)
This paper presents a workflow specification language developed in the WIDE project. The language provides a rich organisation model, an information model including presentation details, and a sophisticated process model. Workflow application developers should find the language a useful and compact means to capture and investigate design details. Workflow(More)