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:

Collective Bargaining

The negotiation process between employers and a group of employees aimed at agreements to regulate working salaries, working conditions, and other aspects of workers' compensation and rights.

Going on Strike

A form of protest or labor action where employees stop working to press for better working conditions, wages, or benefits from their employers.

Withhold Labor

The act of refusing to work, typically as a form of protest or to secure better working conditions or wages.

8-Hour Day

A labor movement regulation that divides the workday into three parts, advocating eight hours for work, eight hours for recreation, and eight hours for rest.