Abstract: The present invention provides a method of allowing a user to obtain a service using a processing system. The method utilises components each of which corresponds to a respective service portion provided by a respective entity. The method includes causing the processing system to determine a combination of components defining a sequence of service portions, in accordance with input commands received from the user. The processing system then implements the components in accordance with the component combination, thereby causing the sequence of service portions to be performed, such that the desired service to be performed.

Abstract: The present invention provides a method of generating computer executable code using components, cach of which corresponds to a respective data manipulation service, typically implemented by a respective entity. The method includes defining a combination of components corresponding to a sequence of data manipulations. The data manipulations are then performed, which can be achieved by requesting the provision of each service from the respective entities in accordance with the defined component combination, thereby causing computer executable code to be generated.