Authors:
Xiang Li
;
Ying Qiao
and
Hongan Wang
Affiliation:
Institute of Software, Chinese Academy of Sciences, China
Keyword(s):
Event-condition-action rules, On-the-fly, Active database, Processing structure, Middleware.
Related
Ontology
Subjects/Areas/Topics:
Coupling and Integrating Heterogeneous Data Sources
;
Databases and Information Systems Integration
;
e-Business
;
Enterprise Information Systems
;
Middleware Integration
;
Middleware Platforms
;
Technology Platforms
Abstract:
Adding and deleting Event-Condition-Action (ECA) rules, i.e. modifications of processing structures in an active database are expected to happen on-the-fly, to cause minimum impact on existing processing procedures of ECA rules. In this paper, we present a flexible ECA rule processing mechanism in active database. It uses a dynamically reconfigurable structure, called unit-mail graph (UMG) and a middleware, called Unit Modification and Management Layer (UMML) to localize the impact of adding and deleting ECA rules so as to support on-the-fly rule modification. The ECA rule processing mechanism can continue to work when the user adds or deletes the rules. This makes active database to be able to react to external events arriving at the system during rule modification. We also use a smart home environment to evaluate our work.