Answer:
Last option: <em>Not </em>statement
Explanation:
Anything outside the borders of the circles are considered the <em>not</em> Boolean statement since the circles represent <em>or</em> and the overlap represents <em>and</em>.
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Answer: In a database, a key field is used to uniquely identify each record for retrieval or manipulation.
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Answer:
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program.
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