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SQL · Intermediate
10 questions · Question 1 of 10
10%
Multiple Choice
Mid
What is Denormalization?
A
Normalization is basically to design a database schema such that duplicate and redundant data is avoided.
B
UNION removes duplicate records (where all columns in the results are the same), UNION ALL does not.
C
In Short: Optimistic assumes that nothing's going to change while you're reading it.
D
It is the process of improving the performance of the database by adding redundant data.
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