Guest Editor's Introduction
An Efficient Evaluation Technique for Non-Stratified Programs by Transformation to Explicitly Locally Stratified Programs
The Implementation of a Deductive Query Language Over an OODB
View Definition and Positioning in DOOD Systems
Formal Semantics for Composite Temporal Events in Active Database Rules*
Debugging and Run-time Monitoring of Active Rules*
An Inheritance System with Regular Expressions and IS-A Relation
Querying Semistructured Heterogeneous Information