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3. 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

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3. 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. (5 points)

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