In Order for Two Queries to Be UNION-Compatible, They Must

question 9

Multiple Choice

In order for two queries to be UNION-compatible, they must:

• A) both have the same number of lines in their SQL statements.
• B) both output compatible data types for each column and return the same number of rows.
• C) both return at least one row.
• D) both return exactly one row.

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Definitions:

Primary Data

Data that is collected directly by the researcher specifically for the purpose of their study, without going through any intermediary sources.

Sociological Survey

A research method used to collect data from participants through questionnaires or interviews to study human behaviors and attitudes.

Indicators

Measurable variables used to show the presence or state of a condition or trend.

Reliable

Reliable describes something or someone that consistently performs well or can be depended upon to provide accurate and trustworthy results.