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Which of the following is incorrect about Primary keys? Select an answer: they must be given a value when the record is created they must
Which of the following is incorrect about Primary keys?
Select an answer:
they must be given a value when the record is created
they must be unique
they can be NULL
values cannot be changed
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Machine Learning And Knowledge Discovery In Databases Applied Data Science Track European Conference Ecml Pkdd 2021 Bilbao Spain September 13 17 2021 Proceedings Part 5 Lnai 12979
Authors: Yuxiao Dong ,Nicolas Kourtellis ,Barbara Hammer ,Jose A. Lozano
1st Edition
3030865169, 978-3030865160
