分类关系模型中的排它性维护及其应用

Maintenance and Application of Exclusion Among Sub-Tables in ClassifiedRelation Models

本文主要讨论在分类关系模型所建立的子关系间有互相排斥的情况下,通过增加分类属性及利用触发器来保证关系的参照完整性和提高维护的效率,并在政府窗口办公、接件管理中得到应用。

In classified relation models, sub-tables are exclusive for each other. To maintain the referential integrity and efficiency among these sub-tables, we add some attributions in parent table and design controlling procedure in triggers . This method has been applied to MIS and OA system.