摘要
为表征对象间复杂的关系,克服传统的关系模型所带来的限制,OODB数据库技术得以迅速发展。
This paper gives the quantity-limiting relationships of complex objects lying in different nesting lays and their expression methods,which can be translated into object predicate calculus by means of our methods. The expression methods can express a kind of complex selection queries.
出处
《计算机科学》
CSCD
北大核心
1998年第2期82-85,共4页
Computer Science
关键词
量词约束
谓词演算
复合对象
数据库
Composite object,Selection query,Object predicate calculus
