In the Database Redesign Process,SQL Tools That Are Useful for Testing

question 54

Multiple Choice

In the database redesign process,SQL tools that are useful for testing whether or not certain conditions or assumptions are valid are ________.

• A)correlated subqueries
• B)EXISTS
• C)NOT EXISTS
• D)B and C
• E)A,B,and C

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Definitions:

Income Effect

Adjustments in the income of a person or the economy and how these adjustments affect the need for certain goods or services.

Substitution Effect

The economic principle that as prices rise or income decreases, consumers will replace more expensive items with less costly alternatives.

Income Effect

The impact of a change in an individual's income on their purchasing behavior, specifically how it affects the quantity of goods or services they buy.

Warren Buffet

A highly successful investor and philanthropist known for his value investing approach and as the principal shareholder and CEO of Berkshire Hathaway.