The Number of Entity Types That Participate in a Unary

question 57

Multiple Choice

The number of entity types that participate in a Unary relationship is:

• A) zero.
• B) one.
• C) two.
• D) three.

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Definitions:

Non-synchronized

Referring to a gearbox that requires the operator to manually match gear speeds before engaging the gear, often found in older or specialized vehicles.

Double-clutching

A driving technique used in manual transmission vehicles where the clutch is depressed twice during a gear change to match the rotational speeds of the engine and transmission.

Axis Of Rotation

The axis of rotation refers to an imaginary line around which an object rotates or spins.

Centerline

A reference line that divides a component or structure into equal parts, often used in design and manufacturing.