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Draw the ERD in Chen notation corresponding to the following spec: Sailors are identified by an...

Draw the ERD in Chen notation corresponding to the following spec:

  • Sailors are identified by an sid, having a name, age, and rating
  • Boats are identified by a bid and also have a name and a color.
  • Sailors reserve boats on a given date.
  • Sailors can have more than one reservation over time, and boats can be reserved multiple times over history by different sailors.
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