Which Operation Is Performed by the SUBTRACT Command in Relational

question 50

Multiple Choice

Which operation is performed by the SUBTRACT command in relational algebra?

• A) union
• B) difference
• C) product
• D) intersection

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Definitions:

Budget Constraint

The cap on the combinations of goods a consumer is able to purchase, determined by their earnings and the cost of those items.

Utility

A measure of satisfaction or happiness that consumers derive from consuming goods and services.

Train Tickets

Tickets that grant the holder the right to travel on a train service, typically specifying the journey details.

Diminishing Marginal Utility

Diminishing Marginal Utility is an economic concept stating that as a person consumes more of a good or service, the satisfaction (utility) gained from consuming each additional unit decreases.