For a system of distributed processes, correctness can be ensured by statically checking whether their composition satisfies the properties of interest. However, web services are distributed processes that dynamically discover properties of other web services. Since the overall system may not be available statically and since each business process is… (More)
The management of non-functional goals, or Service Level Agreements (SLA), in the development of business processes in a Service Oriented Architecture (SOA) often requires much manual and error-prone effort by all parties throughout the entire lifecycle of the processes. The formal specification of SLAs into development tools can simplify some of this… (More)
Service Level Agreements (SLAs) define the level of service that a service provider must deliver. An SLA is a contract between service provider and consumer, and includes appropriate actions to be taken upon violation of the contractual obligations. However, implementing an SLA using existing IT infrastructure is difficult, requiring a lot of manual effort… (More)
Service level agreements (SLAs) impose many non-functional requirements on services. Business analysts specify and check these requirements in business process models using tools such as IBM WebSphere Business Modeler. System integrators on the other hand use service composition tools such as IBM WebSphere Integration Developer to create service composition… (More)
Over the last decade XML has become a de-facto standard to represent and exchange business data. As a result XML is now widely used to build applications that integrate databases, enterprise systems and the Web.