The Design of Real-Time Extensions To The Open Object-Oriented Database System

This paper describes real-time extensions to the Open Object-Oriented Database system using the RTSORAC data model. This model combines an objectoriented data model, real-time requirements, flexible transactions, semantic relationships among objects, and active database features. Several extensions to the Open Object-Oriented Database system, including development of interfaces for real-time objects and realtime transactions, use of a real-time operating system, incorporation of real-time object management, and incorporation of real-time transaction management, are also described. 1 Introduction Many applications such as military command and control, multi-media, and medical patient monitoring, need support for large volumes of complex data that must be manipulated under timing constraints. For instance, a submarine's command and control system relies on complex data representing the position of external contacts that are being tracked. Some capabilities required by such applications ..