内P-集合与数据外-恢复

内P-集合与数据外-恢复

史开泉, 张丽

山东大学数学学院, 山东济南 250100

收稿日期:2009-01-18 修回日期:1900-01-01 出版日期:2009-02-24 发布日期:2009-05-31
通讯作者: 史开泉

Internal Psets and data outerrecovery

SHI Kaiquan, ZHANG Li

School of Mathematics, Shandong University, Jinan 250100, Shandong, China

Received:2009-01-18 Revised:1900-01-01 Online:2009-02-24 Published:2009-05-31

摘要/Abstract

摘要：

内P集合是P集合的一个部分,它是P集合的一个概念。利用内P集合,提出数据与数据外-恢复概念，给出数据外-恢复定理,外-恢复的属性补充冗余原理,利用这些结果给出应用。

关键词: 数据, 数据外-恢复, 外-恢复定理, 属性补充冗余原理, 内P集合

Abstract:

data and　data outerrecovery was proposed, and the data outerrecovery theorem and redundancy principle of attribute surplus were given. By using these results, applications were given.

Key words: internal Psets, data, data outerrecovery, outerrecovery theorem, redundancy principle of attribute surplus

中图分类号:

O159

史开泉, 张丽. 内P-集合与数据外-恢复[J]. J4, 2009, 44(4): 8-14 .

SHI Kaiquan, ZHANG Li. Internal Psets and data outerrecovery[J]. J4, 2009, 44(4): 8-14 .

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