A Field Identified in a Table as Holding the Unique

question 24

Multiple Choice

A field identified in a table as holding the unique identifier of the table's records is called the:

• A)primary key.
• B)key field.
• C)primary field.
• D)unique ID.
• E)primary entity.

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Definitions:

Iron Ore

A rock from which metallic iron can be economically extracted.

Copper

A metal element with high thermal and electrical conductivity, widely used in electrical wiring and construction.

Swap Contract

A derivative contract through which two parties exchange financial instruments, such as interest rates, commodities, or foreign exchange.

Forward Contract

A non-standardized contract between two parties to buy or sell an asset at a specified future date for a price agreed upon today.