Which of the Following Is True in a Relational Database

question 92

Multiple Choice

Which of the following is true in a relational database?

• A) Each row and each column has a primary key.
• B) Each row has a unique name and each column has a primary key.
• C) Each row has a primary key and each column has a unique name.
• D) Each row and each column has a unique name.

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Definitions:

Skewed

A description of data in which the distribution is not symmetrical, but instead has a longer tail on one side of the peak or the other, indicating an asymmetry.

Median

The value separating the higher half from the lower half of a data sample, a population, or a probability distribution.

Test Performance

Evaluation of the effectiveness or efficiency of a test, often measured in terms of accuracy, speed, or comprehensiveness.

5-Kilometre Race

A competitive running event covering a distance of five kilometres, often organised for both professional athletes and community participants.