Michelle Tells Malia That a Primary Key Is a Field

question 17

Multiple Choice

Michelle tells Malia that a primary key is a field or combination of fields that uniquely and minimally identifies a particular entity. She explains that there may be a choice of fields or field combinations to use as the primary key. What is the term used for a possible primary key?

• A)candidate key
• B)concatenated key
• C)foreign key
• D)secondary key

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Definitions:

Inflation Premium

The additional interest rate that lenders demand to compensate for the loss of purchasing power of money due to inflation.

Yield Curve

The relationship between interest rates and the term of debt, generally expressed graphically. A normal yield curve is upsloping, reflecting rates that increase with increasing term. An inverted curve is downsloping.

Liquidity Premiums

Additional yield that investors require for holding securities with lower liquidity.

Maturity Risk Premium

The additional interest rate or yield that investors demand to hold longer-maturity debt over shorter-term instruments.