Identify the Statement Below That Is False with Regards to Basic

question 29

Multiple Choice

Identify the statement below that is false with regards to basic requirements of a relational database model.

• A)Primary keys can be null.
• B)Foreign keys,if not null,must have values that correspond to the value of a primary key in another table.
• C)All non-key attributes in a table should describe a characteristic about the object identified by the primary key.
• D)Every column in a row must be single-valued.

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Definitions:

Potential Buyers

Individuals or entities that have shown interest or possess the capability to purchase goods or services.

Lemons

In economics, a term used to describe a product of significantly lower quality than what was expected, particularly in the context of used vehicles.

Potential Buyers

Individuals or entities that show interest in purchasing a product or service but have not yet made the decision to buy.

Relative Measure

A comparative metric that evaluates a data point or performance outcome in relation to another baseline or standard.