Object - Association relationship (link)

About

Logical Data Modeling - Association

An Association is just the link on a class diagram that represents visually a relationship.

Example

Bank

Bank: Given a Bank, a particular accountNo identifies zero or one Person where:

  • the qualifier is the Property accountNo,
  • the qualified object is the Bank.

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Chessboard

  • where every possible value for Rank and File indicates an individual Square because the multiplicity is 1:1 (Therefore an individual Square on the Chessboard may be identified by rank and file)
  • with a composite relationship (black diamond)

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Documentation / Reference


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