If No Candidate Keys Exist in a Table,which of the Following

question 58

Multiple Choice

If no candidate keys exist in a table,which of the following is used?

• A)surrogate key
• B)dummy key
• C)primary key
• D)index key

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Definitions:

Long Run Equilibrium

Long run equilibrium occurs when all inputs can be adjusted by firms, markets are perfectly competitive, and economic profit is zero, leading to a situation where firms just cover their opportunity costs.

Monopolistically Competitive

A market structure characterized by many sellers offering differentiated products, leading to competition based on product quality, brand, and price.

Zero Profits

A situation where a firm's total revenues exactly equal its total costs, typically in the long run in perfectly competitive markets.

Monopolistic Competition

A market structure characterized by many firms selling products that are similar but not identical, with few barriers to entry.