Multiple choice technology architecture

What can a mandatory one to one relationship indicate?

  1. More entities are needed

  2. The model should be denormolized

  3. The tables are not properly indexed

  4. The model cannot be implemented physically

  5. More attributes are needed
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E Correct answer
Explanation

A mandatory one-to-one relationship between two entities often indicates they should be combined into a single entity. If they truly must be separate, the mandatory one-to-one constraint suggests the model is missing attributes - there should be additional distinguishing characteristics to justify their separation.

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