高技术通讯(英文版)
高技術通訊(英文版)
고기술통신(영문판)
HIGH TECHNOLOGY LETTERS
2003年
1期
92-96
,共5页
徐长醒%Liu Yunsheng%Xu Guiping
徐長醒%Liu Yunsheng%Xu Guiping
서장성%Liu Yunsheng%Xu Guiping
active database%active rule%coupling modes%parallel
It is known as Coupling Modes that how the rule in active database system is triggered to execute by rule monitor when some special events occurs. In general, the Coupling Modes may be divided into immediate, deferred and detached modes in active database systems. This paper classifies the coupling modes into syn-coupling and asyn-coupling modes, according to the key issue, synchrony/asynchrony, in parallel programming language. Rule execution semantics for various coupling modes is distinctly defined. It is beneficial to implementation and usage of the active rule system. After graph-based rule system (E-RG) and its execution model, which have been researched in their previous works, are chiefly described, the authors show the various strategies to construct the syn-coupling and asyn-coupling modes in E-RG rule system, based on semantics for coupling modes.
