The RAPID Case Study: Requirements for and the Design of a Fast-Response Database System
Antoni Wolski, Janne Karvonen, Anton Puolakka · 1996
Time-critical industrial applications represent a database requirement profile which is significantly different from that in traditional (business) database applications. Results of a corresponding needs survey performed among leading developers of factory systems are presented in the paper. The requirements have paved way to the development of the RAPID system--a fast-response and active history database Client/Server system which has a unique assortment of temporal and active characteristics. Some of the most crucial design questions are discussed, including the choice of the process architecture and concurrency models, the temporal table model and the triggers semantics. 1 Introduction In a complex industrial installation (such as a paper mill, a power plant or a chemical process) a lot of data is produced by sensors and the automatic control system. In order to post-process the data, the system has to cope with the following data characteristics: . the data assimilation rate may...