Listen

Relational data is based on which three mathematical concepts? Select all that apply.

Question $1$ options:

A variable

A domain

A tuple

A relation

A table

An equation

Question $2(2$ points$)$

Listen

Which of these answers are relational operations? Select all that apply.

Question $2$ options:

A join

A boxed structure

Projection

Outer attachments

Big data

Selection

Question $3(2$ points$)$

Listen

In relational databases, each individual space within a row or column contains exactly one value.

Question $3$ options:

True

False

Question $4(2$ points$)$

Listen

A table must have at least one column and any number of rows. A table without rows is called an empty table.

Question $4$ options:

True

False

Question $5(2$ points$)$

Listen

What is database independence? Select one.

Question $5$ options:

Columns that align to form a vertical data order

Data sets that are in perfect symmetry

Rows and columns of a table that have no inherent order

A database that can operate without a network

Question $6(2$ points$)$

Listen

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

Question $6$ options:

Arithmetic

Variable

False

Upwards

Comparison

Logical

Question $7(2$ points$)$

Listen

NULL represents either "unknown" or "inapplicable."

Question $7$ options:

True

False

Question $8(2$ points$)$

Listen

What is big data? Select one.

Question $8$ options:

The product of an unregulated internet

Massive volumes of online data

Algorithmic code that sifts through large amounts of information

The future of systemic thinking

Question $9(2$ points$)$

Listen

In the relational data structure, which components are named?

Question $9$ options:

Data type, row, table

Data type, table

Data type, table, column

Question $10(2$ points$)$

Listen

What are the components of a column?

Question $10$ options:

Name only

Data type only

Name and data type