A rule model in active databases
Guizhen Wang · 2014 IEEE Workshop on Advanced Research and Technology in Industry Applications (WARTIA) · 2014
Active databases are famous for the ability of monitoring events, reacting to them automatically. The active action is incorporated using rules attracting most of researcher's attention. Base on the traditional E-C-A rule model, an E-RG model is proposed. Contrasted to E-C-A model, the E-RG model simplifies the coupling mode with only one coupling phase which can simplify the execution of rules and enhances the semantics of rules with a rule graph (named RG) which can capture the complex structure of a group of rules effectively. Not only the execution of three couple modes of rules in E-RG but also the execution of embedded rules are described in details.