Given below is an ER Diagram depicted in Chen's notation. Assume each Employee…

UP Police Computer Operator Grade A · 2017 · Computer Operator Grade A · 21 Dec 2018 Shift 1 · Computer ScienceModified — slightly modified from the official paper; see the solution

Given below is an ER Diagram depicted in Chen's notation. Assume each Employee Name identifies exactly one Employee ID and each Employee ID identifies exactly one Employee Name. Match the relationship from the given options.

Chen ER diagram: Employee Name and Employee ID rectangles are joined by a “has” relationship diamond; no cardinality marks appear.
  1. A.

    One to one

  2. B.

    One to many

  3. C.

    Many to many

  4. D.

    Many to one

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