Binary 1-n relationship-optional-to-optional relationship

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Reference no: EM1351724

Q1) Give examples of binary 1:N relationships, for (a) an optional-to-optional relationship, (b) an optional-to-mandatory relationship, (c) a mandatory-to-optional relationship, and (d) a mandatory-to-mandatory relationship. Illustrate your answer using IE Crow's Foot E-R diagrams.

Reference no: EM1351724

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