In a Relational Database Model, Which Operation Pares Down a Table

question 44

Multiple Choice

In a relational database model, which operation pares down a table by eliminating columns according to certain criteria?

• A)project operation
• B)join operation
• C)find operation
• D)insert operation

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Definitions:

Field Notes

Observational data recorded by researchers during or after their fieldwork, documenting their observations and experiences.

Representative Sample

A subset of a population that accurately reflects the members of the entire population.

Survey Research

A quantitative method of sociological research that involves asking people questions in a designed survey to collect data.

Objectivity

A principle of being unbiased and not influenced by personal feelings or prejudices in considering and representing facts.