Titlebook: Database and Expert Systems Applications; 8th International Co Abdelkader Hameurlain,A Min Tjoa Conference proceedings 1997 Springer-Verlag

剝削

Intersect

Antonio Giarra-Zimmermann,Bert Eichhornr a good organisation of data and transformations using the subsumption function which enables building many hierarchies of data and transformations. This is a first step towards the schema integration process. We provide many examples to illustrate our claims.

羅盤

Dysplasia

Insubordinate

擴大

上下倒置

燈泡

META

Crayon

Refined termination decision in active databases,re general trigger model. We will first introduce the concepts of activator and deactivator. These capture the relationship between the trigger actions of one rule with the trigger condition of another rule. Based on these, we propose a refined method to detect more termination situations than previous works.