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Which of the following are SQL operators? Select all that apply. Correct Answ_Arithmetic
Comparison
Logical
True or false: NULL represents either "unknown" or "inapplicable." Correct Answ_True
What is big data? Select one. Correct Answ_Massive volumes of online data
On which three mathematical concepts is the relational data structure based? Select all that apply.
Correct Answ_A domain
A tuple
A relation
Which of the following are relational operations? Select all that apply. Correct Answ_A join
Projection