Explain why the join operation in relational algebra can be an enormous drain on the database performance.

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A: Answer

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A: Answer the above questions are as follows:

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A: I give the code in C++ along with output and code screenshot

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A: ANSWER:-

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A: the java code is an given below :

Q: Is it possible that John von Neumann was married at some time in his life?

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A: The code is given as,

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Q: What exactly is a multicore processor? Explain and justify its benefits.

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Transaction Processing

Transaction processing is a computational style generally performed by server computers, which supports interactive applications (apps). Transaction processing is also known as information processing, which divides the work into indivisible and individual operations called transactions. The transaction is a set of tasks; a single task is considered as the minimum processing unit that cannot be divided again.