Match the Database Integrity Rule to the Appropriate Definition

question 4

Multiple Choice

Match the database integrity rule to the appropriate definition.
-Rule 1: Entity Integrity

• A)Each record in the database must have a unique identifier called a primary key.
• B)Data referenced and stored in related tables must be consistent across the database.
• C)The field values must be from a predefined domain.
• D)The primary key value cannot be null (empty).

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Definitions:

Pure Competition

A market structure characterized by an extremely large number of sellers and buyers, homogeneous products, and easy entry and exit from the market.

Market Demand Curve

A graphical representation showing the relationship between the price of a good or service and the quantity demanded by consumers over a period of time.

Nonprice Competition

A marketing strategy where companies differentiate their products or services based on attributes other than price, such as quality, design, or brand reputation.

Pure Competition

A market structure characterized by a large number of sellers offering standardized products or services, with no single seller able to influence price or market conditions.