摘要
论文引入元组、集合、序列和时态4个基本构造子来建立时态对象结构的代数模型，同时例证了各种传统时态关系模型向时态对象模型的转化。研究表明，时态对象模型在复杂结构和时态语义建模方面比时态关系模型更具优势。
In this paper, four constructors, i. e., tuple, set, list and temporal constructorswere introduced to construct an algebraic model of structure of temporal objects. Transformations from various traditional temporal relational data models to the temporal object modelwere illustrated. The study has shown that the algebraic model of structure of temporal objects has more advantages over temporal relational models in complex structures and temporal semantics modeling.
出处
《武汉测绘科技大学学报》
CSCD
1998年第2期137-140,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金
国家教委博士点专项基金
