DATABASE RELATIONS WITH NULL VALUES

被引：125

作者：

ZANIOLO, C

机构：

来源：

关键词：

D O I：

10.1016/0022-0000(84)90080-1

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

引用

页码：142 / 166

页数：25

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