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What is a key and why is it important in the relational model?
Time Zones
Geographically based divisions where the local time is adjusted from the standard time, primarily influenced by the rotation of the earth relative to the sun.
Travel East
The action of moving in an easterly direction, often associated with adjusting to time zone changes and potentially experiencing jet lag.
Travel West
The action or process of moving or being transported towards the west.
Sleep Cycle
A recurring pattern of stages of sleep that occur throughout the night, typically including stages of light sleep, deep sleep, and REM (rapid eye movement) sleep.
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