Relational Database Concepts and SQL Operators, Exams of Advanced Education

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DAD-220 2-2 Module Two Quiz (with correct

answers) Southern New Hampshire University

A domain A tuple A relation A join Projection

On which three mathematical concepts is the relational data structure

based? Select all that apply.

Question options:

A variable A table An equation 2 / 2 points

Which of the following are relational operations? Select all that apply.

Question options:

A boxed structure Outer attachments

True Rows and columns of a table that have no inherent order SUM AVG MAX

Question options:

False 2 / 2 points

What is database independence? Select one.

Question options:

Data sets that are in perfect symmetry Columns that align to form a vertical data order A database that can operate without a network 2 / 2 points

Which of the following are arithmetic functions of SQL? Select all that

apply.

Question options:

UND

OVER

Arithmetic Comparison Logical True

DELETE

2 / 2 points

Which of the following are SQL operators? Select all that apply.

Question options:

Variable False Upwards 2 / 2 points

True or false: NULL represents either “unknown” or “inapplicable.”

Question options:

False 2 / 2 points

What is big data? Select one.

Question options: