An apparatus for providing an event scheme for a context model may include a processor and a memory storing executable instructions that in response to execution by the processor cause the apparatus to at least perform operations including defining an event scheme comprising at least two phases and providing the event scheme for use in a topologically independent context model. One of the at least two phases defined may enable provision of a notification from a consumer application to a data provider and the other of the at least two phases may enable provision of a notification from the data provider to the consumer application. The context model may be configured to provide access by consumer applications to property information of data providers via the context model.