A FOUNDATION OF CODD RELATIONAL MAYBE-OPERATIONS

被引:36
作者
BISKUP, J [1 ]
机构
[1] RHEIN WESTFAL TH AACHEN,D-5100 AACHEN,FED REP GER
来源
ACM TRANSACTIONS ON DATABASE SYSTEMS | 1983年 / 8卷 / 04期
关键词
D O I
10.1145/319996.320014
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
引用
收藏
页码:608 / 636
页数:29
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