Suppose a Relational Database Contained Two Linked Tables

question 82

Multiple Choice

Suppose a relational database contained two linked tables.Which of the following items is not necessarily present in the database?

• A)Two primary keys
• B)Two foreign keys
• C)At least one column
• D)One foreign key

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Definitions:

Coefficient

In algebraic expressions, a variable is multiplied by a numerical or constant figure placed before it, acting as a multiplier.

Constant

A value that does not change and remains the same in mathematical equations, experiments, and various scientific contexts.

Regression

A statistical technique employed to identify the intensity and nature of the connection between a single dependent variable and one or more independent variables.

Scatterplot

A graphical representation that displays the relationship between two quantitative variables by using dots.