Design of RapidBase-an active measurement database system

Abstract

In datu-intensive industrial on-line applications utilizing live process data, one faces an unusual set of dutubase requirements. The process measurement &a need to be acquired at great speed, organized in time series and made available for time-based retrieval. Active capabilities old functional extensibility are needed to implement a jlexible data-driven processing pardigm. An efficient transaction logging and recoverj mechanism is needed in order not to impede the dccta acquisition flow. RupidBuse is a system that meets these requirements. It utilizes a main-menior)i database, a unique temporal-relational dufa model for hundling time series, and an elaborate trigger subsystem. It is implemented as a server program equipped with interfaces of high power of expression.