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Question: consider that there are three entity sets e1 e2 and...

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Consider that there are three entity sets E1, E2, and E3 and two relationships, denoted by R1 and R2. R1 is one-to-one from E1 to E2. R2 is one-to-one from E2 to E3. Is the following statement true?

  • E2 can be safely removed if it doesn't have any attributes and if it doesn't participate in any other relationships. Explain your answer.
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