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Database Proxies: A Data Management approach for Component-Based Real-Time Systems


Publication Type:



We present a novel concept, database proxies, which enable the fusion of two disjoint productivity-enhancement techniques; Component Based Software Engineering (CBSE) and Real-Time Database Management Systems (RTDBMS). This fusion is neither obvious nor intuitive since CBSE and RTDBMS promotes opposing design goals; CBSE promotes encapsulation and decoupling of component internals from the component environment, whilst RTDBMS provide mechanisms for efficient and safe global data sharing. Database proxies decouple components from an underlying database thus retaining encapsulation and component reuse, while providing temporally predictable access to data maintained in database. We specifically target embedded systems with a subset of functionality with real-time requirements, and the results from our implementations shows that the run-time overhead from introducing database proxies is negligible and that timing predictability does not suffer from the introduction of an RTDBMS in a component framework.


author = {Andreas Hjertstr{\"o}m and Dag Nystr{\"o}m and Mikael Sj{\"o}din},
title = {Database Proxies: A Data Management approach for Component-Based Real-Time Systems},
month = {November},
year = {2009},
url = {}