The _____ Constraint Can Be Placed on a Column to Ensure

question 36

Multiple Choice

The _____ constraint can be placed on a column to ensure that every row in the table has a value for that column.

• A) UNIQUE
• B) NOT NULL
• C) VALUE
• D) EMPTY

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Definitions:

Environmental Laws

Statutes and regulations aimed at protecting the environment from harm caused by human activities, through the regulation of pollution, resource management, and conservation.

Regulations

Rules or directives made and maintained by authorities to regulate behavior or ensure standards.

Ecology

The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.

Emerged

Came into being or became noticeable or prominent in a particular context or area.