The Purpose of the ____ Constraint Is to Ensure That

question 20

Multiple Choice

The purpose of the ____ constraint is to ensure that two records do not have the same value stored in the same column.However,it can contain NULL values.​

• A) ​PRIMARY KEY
• B) ​UNIQUE
• C) ​CHECK
• D) ​FOREIGN KEY

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Definitions:

Noncontributory

Pertains to employee benefit plans where the employer bears the full cost of the benefits without requiring financial contributions from employees.

Employer Contributes

Refers to the financial or resource input made by an employer towards employee benefits, retirement plans, insurance, or other compensatory mechanisms.

Tax Deductible

Refers to certain expenses that individuals or businesses can subtract from their gross income to reduce taxable income, thereby lowering overall tax liability.

Defined Benefit Plan

A type of pension plan in which an employer promises a specified pension payment upon retirement, based on the employee's earnings and tenure.