Assignment-2 ERD.docx

Assignment-2 ERD.docx - Dung Than 1456821 Assignment 2...

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Dung Than 1456821 Assignment 2 Question 1 & 2
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3. 10 business rules: A location may have one or many meets A meet must have a location A meet must have one or many events An event must be had a meet A team has one or many swimmers A swimmer is in a team A swimmer may have one or many results A result must be achieved by a swimmer An event has one or many results A result must be had in an event 4.The Idea of stored attribute and derived attributes. The stored attribute is data which is already stored in the database. The Derived attribute is can be calculated from related attributes value and stored attributes. (Modern Database Management, 12
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  • Fall '17
  • Barson

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