历史关系数据库的统计接口

A. Tansel
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引用次数: 39

摘要

历史数据库是用于统计分析的大量数据来源。本文提出了一种基于属性时间戳的基础数据模型的历史关系数据库统计接口。我们提出的统计接口包括聚合函数和将数据转换为适合高级统计分析的表格形式,并能够处理时间的微妙语义和与之相关的各种问题。在历史关系代数中引入了一种称为枚举的新操作。枚举操作从三维历史关系派生出一组指定时间点或间隔的统一数据表。我们还给出了一种对历史关系进行规范化和对其属性的时间进行对齐的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A statistical interface for historical relational databases
A historical database is a vast source of data for statistical analysis. The paper presents a statistical interface for historical relational databases with an underlying data model which uses attribute time-stamping. The statistical interface we propose includes aggregate functions and transformations of data into tabular forms suitable for advanced statistical analysis and is capable of dealing with the subtle semantics of time and various issues associated with it. A new operation, called enumeration, is introduced into historical relational algebra. The enumeration operation derives a table of uniform data, for a set of specified time points or intervals, from a three dimensional historical relation. We also give a method for normalizing historical relations and aligning the time of their attributes.
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