Question

Which of the following is a false statement? (a) Primary key cannot contain null values. (b) Primary key cannot contain duplicate values. (c) Primary key can be combination of more than one field. (d) Primary key is always numeric field.

Answer 1

the option c is false

Answer 2

"Option (d) Primary key is always numeric field.

Primary key is always a numeric field is a false statement among the given options.

Because, Primary key cannot contain null values is true, Primary key need unique values hence it could not contain duplicate values.

Primary key can take up values from one or a combination of the fields. Hence, other than the option d, every options are true.

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