The Primary Key for 1:1 Relationship Tables

question 91

Multiple Choice

The primary key for 1:1 relationship tables

• A)is a single attribute.
• B)always consists of two attributes.
• C)is the primary key of the most important entity linked to that relationship.
• D)does not exist.Many-to-many relationship tables only use foreign keys.

---

Definitions:

Social Security System

A government program that provides financial assistance to retirees, disabled workers, and survivors of deceased workers.

Tax Bracket

A range of incomes taxed at a given rate.

Average Tax Rate

The ratio of the total amount of taxes paid to the total taxable income, showing the share of income that goes to taxes.

Marginal Tax Rate

The rate at which the last dollar of income is taxed, indicating the percentage of an additional dollar of earnings that will be paid in tax.