Every Table in a Relational Database Must Have a Key

question 18

True/False

Every table in a relational database must have a key.

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Definitions:

Binocular Disparity

The difference in image location of an object seen by the left and right eyes, resulting from the eyes’ horizontal separation and providing a cue to depth perception.

Visual Field

The entire area that can be seen when the eyes are focused on a central point.

Top-down Processing

Cognitive processing that begins with thoughts or higher-level functions before receiving sensory input.

Monocular Depth Cues

Visual information that allows one eye to perceive depth and distance, such as texture gradient, interposition, and linear perspective.