Active and passive rules for complex object databases

Abstract

The problem of adding language facilities to express production rule in the framework of a complex object database with active behavior is considered. The issue of the definition of a suitable interaction between production rules and transactions is crucial in this context and is addressed in this paper: this involves questions regarding triggering and activation modes of production rules with respect to transaction execution: the management of multiple rules activation, and the definition of the related execution environment. We propose a rule-based language on complex objects that allows the definition of both (,active) production rules and (passive) ordinary transactions in a unified framework.