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A set of data within a table, represented by a single column or multiple columns, that corresponds to null values a . composite key b
A set of data within a table, represented by a single column or multiple columns, that
corresponds to null values
a composite key
b none of these
c superkey
d candidate key
e foreign key
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Data Access Patterns Database Interactions In Object Oriented Applications
Authors: Clifton Nock
1st Edition
0321555627, 978-0321555625
