RBE: A Rule-by-example Active Database System

1997 ◽  
Vol 27 (4) ◽  
pp. 365-394 ◽  
Author(s):  
YE-IN CHANG ◽  
FWO-LONG CHEN
Keyword(s):  
Database System ◽  
Active Database

An overview of production rules in database systems

1993 ◽  
Vol 8 (2) ◽  
pp. 121-143 ◽  
Author(s):  
Eric N. Hanson ◽  
Jennifer Widom
Keyword(s):  
Database Systems ◽  
Database System ◽  
Future Research ◽  
Active Database ◽  
Production Rules ◽  
Research Directions ◽  
Rule Languages ◽  
Future Research Directions ◽  
Constraint Enforcement ◽  
Derived Data

AbstractDatabase researchers have recognized that integrating a production rules facility into a database system provides a uniform mechanism for a number of advanced database features including integrity constraint enforcement, derived data maintenance, triggers, protection, version control, and others. In addition, a database system with rule processing capabilities provides a useful platform for large and efficient knowledge-base and expert systems. Database systems with production rules are referred to as active database systems, and the field of active database systems has indeed been active. This paper summarizes current work in active database systems, and suggests future research directions. Topics covered include database rule languages, rule processing semantics, and implementation issues.

Revisiting Workflow Modeling with Statecharts

2011 ◽  
pp. 237-256 ◽  
Author(s):  
Wai Y. Mok ◽  
David Paper
Keyword(s):  
Workflow Management ◽  
Database Systems ◽  
Database System ◽  
Workflow Modeling ◽  
Active Database ◽  
Workflow Management Systems ◽  
Systematic Method ◽  
Preliminary Validation ◽  
System Properties

In this chapter, we model business workflows using Harel’s statecharts. We demonstrate that mapping to statecharts allows one to systematically identify potential workflow problems. Moreover, it also allows one to investigate specific properties inherent in actual business workflows. Our research focuses on three desirable properties of active database systems — termination, confluence, and observable determinism. As a theoretical lens for termination and confluence, we develop algorithms linking desirable active database system properties to workflow management systems problems. Preliminary validation of our algorithms is accomplished by mapping business workflows from a case study. Our research thus generates preliminary theory by developing a systematic method for identifying workflow problems.

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