TxQoS : a case analysis

Transaction support is vital to ensure robust and reliable execution for collaborative business processes that are usually long-lasting and built upon heterogeneous applications. Contracts regulate relationships between collaborating parties along the processes so that the business trustworthiness is guaranteed. In this paper, we analyze and discuss a real-life business process from both contractual and transactional per- spectives. We propose the use of Transactional Quality of Service (TxQoS) specification in Service Level Agreements (SLAs) to infuse transactional semantics into contracts. Our proposed enforcement of TxQoS in contract-driven service-oriented business process contributes in two ways. First it facilitates unambiguous understanding of relia- bility between the consumers and the providers. Second it enhances execution reliability of such processes.