Which Command Can Be Used to Determine Whether or Not

question 46

Multiple Choice

Which command can be used to determine whether or not a column is allowed to contain a NULL value?​

• A) ​DISPLAY_CONSTRAINTS
• B) ​DESCRIBE
• C) ​DEFINED_CONSTRAINTS
• D) ​DISPLAY

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Definitions:

Strivings

Persistent efforts or endeavors towards achieving long-term goals or fulfilling needs.

Expectancies

Expectancies are beliefs about the likelihood of future events happening, which can influence behavior and outcomes.

Current Concern

A present matter or interest that occupies an individual's attention and thought.

Incentive

Something that motivates or encourages an individual to take action or endeavor to achieve a certain goal.