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Please draw a 1:1 E-R diagram and explain the relationship (should have two entities). Please draw...

Please draw a 1:1 E-R diagram and explain the relationship (should have two entities).

Please draw a 1:N E-R diagram and explain the relationship (should have two entities, with crow’s foot notation).

Please draw a N:M E-R diagram and explain the relationship (should have two entities, with crow’s foot notation).

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