Therefore, why isn't an object's presence in a data model required?

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A: Let's see the answer:

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A: Let's discuss about the history of  de-bugging and debug.

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A: Check below mention step for explanation

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A: The correct code is given below with output screenshot

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A: Dear Student, The answer to your question is given below -

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A: check next step for explanation

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A: answer is

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Theoretical Computer Science

Usually, computer science seems like a practical field that involves studying, building, and working closely with computers. However, a subclass of this discipline also centers on the mathematical factors of the same. This is called theoretical computer science, and its focal point differentiates it from other branches of computer science: the rigorous mathematical approach it takes. This discipline falls under the umbrella of discrete mathematics, which is the study of countable or discontinuous mathematical structures.