Which of the Following Cannot Be Done Using the CONSTRAINT

question 40

Multiple Choice

Which of the following cannot be done using the CONSTRAINT phrase?

• A) Create a single attribute primary key.
• B) Define a foreign key.
• C) Establish a referential integrity constraint.
• D) Define an attribute to be NOT NULL.
• E) Defining a name for the constraint.

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Definitions:

Ash Columns

Vertical plumes of volcanic ash and gas that are ejected into the atmosphere during an explosive volcanic eruption.

Lava Domes

Rounded, bulbous mounds of viscous lava that are formed by the slow eruption of lava from a volcano.

Lava Fountain

A jet of molten lava that is ejected into the air from a volcanic vent.

Pyroclastic Column

A dense cloud of hot ash, gas, and volcanic matter that rises above a volcano during an explosive eruption.