Question
A foreign key A) must be either null or a primary key in another table. B) must be a primary key in another table and
A foreign key
A) must be either null or a primary key in another table.
B) must be a primary key in another table and cannot be null.
C) may be a primary key or a non-key attribute in another table.
D) may be a non-key attribute in another table and cannot be null.
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Financial Reporting International Standards
Authors: Graham Eaton
1st Edition
0750662379, 978-0750662376
