MODELING TEMPORAL DATA

被引：6

作者：

TANSEL, AU ^{[1
]}

机构：

[1] CUNY BERNARD M BARUCH COLL,NEW YORK,NY 10010

来源：

INFORMATION AND SOFTWARE TECHNOLOGY | 1990年 / 32卷 / 08期

关键词：

databases; modelling; relational data model; temporal data;

D O I：

10.1016/0950-5849(90)90141-D

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The paper discusses modelling temporal variation of data in the context of the relational data model. This is done by employing time-stamps, which leads to two possible approaches: adding time-stamps to tuples and using first normal-form (1NF) relations, and adding time-stamps to attributes and using non-first normal form (NINF) relations. Modelling temporal data according to each approach with their respective data-manipulation operations are covered. This is followed by a discussion that includes the advantages and expressive power of each approach, the classification of temporal databases, and the handling of retroactive and postactive changes. © 1990.

引用

页码：514 / 520

页数：7

共 30 条

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