Supporting Production Rules Using ECA-Rules In An Object-Oriented Context

. This paper presents an approach to implementing production rules for object-oriented databases (OODBs). The approach builds upon earlier work on production rule algorithms for relational databases, and exploits fundamental differences in the structuring mechanisms employed by OODBs. An implementation is described whereby the production rules are mapped onto event-condition action rules for execution. It is shown how the resulting implementation has minimal space overheads, and a time performance close to that of the widely used TREAT algorithm which uses significantly more space. Keywords: Production rules, object-oriented databases, active databases. 1 Introduction The area of active databases has emerged in recent years as a mainstream research direction for advanced database systems. Active functionality, normally expressed using Event-Condition-Action rules (ECA-rules), can be used to support time constrained or real time applications (commodity trading, traffic management, pl..