A Primary Key Used in a Database Is a ________

question 58

Multiple Choice

A primary key used in a database is a ________.

• A) group of rows that are formed to identify a unique table or file
• B) column or group of columns that identifies a unique row in a table
• C) character or byte that represents fields or columns
• D) group of tables or files formed to identify a unique field or row

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Definitions:

Machinery

Mechanical devices or equipment that perform various tasks on a job site, in a manufacturing or production environment.

Trade-In Allowance

The amount credited to a buyer for the value of a traded item towards the purchase of a new item.

Accumulated Depreciation

The aggregate depreciation cost allocated to a fixed asset since its initial purchase.

Commercial Substance

A financial concept indicating that a transaction significantly changes the economic position or cash flows of the entity.