What is the difference between TAOs Real-Time Event Service and the OMG Notification Service?
The Notification Service is an implementation of the OMG’s Notification Service specification, which originally came out of the Telecommunications working group within the OMG. See http://www.omg.org/cgi-bin/doc?formal/2000-06-20 for the specification. The Notification Service is backwards compatible with the OMG Event Service. The Real-Time Event Service is TAO specific. It was developed prior to the adoption of the OMG Notification Service specification. The RT Event Service was designed to meet the real-time and quality of service needs of certain sponsors of the DOC group, but has applicability in a wide variety of domains. On the surface, the two services provide several similar features, though the specifics of their interfaces and implementations are quite different: • similar communications model • support for structured events • filtering of events • support for subscriptions • mechanisms for specifying QoS requirements • support for delivery of sequences of events In addition
