Compensational Transaction in SOA11g
Transaction processing techniques play a major role in preserving data consistency in critical areas of computing. The reliability provided through transactional guarantees are required in many types of applications, found in for instance workflow systems, mobile systems, and lately also in SOA like web services based systems. Web services provide interoperable application-to-application communication, allowing new applications to leverage existing software functions in a platform independent fashion. The transactional behaviour of a function accessed through a web service depends on the underlying implementation of the web service. Often a database system will provide the required local transactional behaviour. However, when an application combines multiple web services in order to complete a given task, coordination of the participating web services is required in order to preserve data consistency. Traditionally two phased commit (2PC) based protocols have been used t