基于C-TRDM模型的Key-Time法与时间过滤算子

Researching into the Method of Key-Time based on the C-TRDM and the Time Filtration Operator

基于C-TRDM时态数据模型,利用传统的关系数据库来进行时态数据处理研究,提出一种修正关系数据表结构的“Key-Time”法和时间过滤算子的新概念,讨论了如何基于“Key-Time”法进行单表和多表之间的时间过滤操作,并结合实例给以说明.

Based on the C-TRDM temporal data model, the paper first puts forward a “Key-Time” method to modify relation database table structure and a new concept of time filtration operator, then introduces time filtration operation among tables with the Key-Time method, and provides illustrations.