DAD 220 - Quiz 2-2

Which of the following are SQL operators? Select all that apply. Question options: Arithmetic Variable False Upwards Comparison Logical

Arithmetic Comparison Logical

What is big data? Select one. Question options: The future of systemic thinking Massive volumes of online data Algorithmic code that sifts through large amounts of information The product of an unregulated internet

Massive volumes of online data

What are the components of a column? Question options: Name only Data type only Name and data type

Name and data type

What is database independence? Select one. Question options: A database that can operate without a network Columns that align to form a vertical data order Rows and columns of a table that have no inherent order Data sets that are in perfect symmetry

Rows and columns of a table that have no inherent order.

A table must have at least one column and any number of rows. A table without rows is called an empty table. Question options: True False

True

In relational databases, each individual space within a row or column contains exactly one value. Question options: True False

True

NULL represents either "unknown" or "inapplicable." Question options: True False

True

Which of these answers are relational operations? Select all that apply. Question options: A join A boxed structure Projection Outer attachments Big data Selection

A join Projection Selection

In the relational data structure, which components are named? Question options: Data type, row, table Data type, table Data type, table, column

Data type, table, column

Relational data is based on which three mathematical concepts? Select all that apply. Question options: A variable A domain A tuple A relation A table An equation

A domain A tuple A relation