A Constraint That Requires an Instance of an Entity to Exist

question 20

True/False

A constraint that requires an instance of an entity to exist in one relation before it can be referenced in another relation is called an insertion anomaly.

---

Definitions:

Income Increases

A rise in the amount of money received, typically from employment, business, or investments.

Demand Curve

A graph showing the relationship between the price of a good and the quantity demanded by consumers.

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a specific price level, at a given point in time.

Price Decreases

A situation where the cost of goods or services lowers over time, often leading to increased consumer purchasing power.