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Figure 4-38(a) shows a two-entity data model for the sheet-music-tracking problem. a. Select identifiers for the...

Figure 4-38(a) shows a two-entity data model for the sheet-music-tracking problem. a. Select identifiers for the ChoirMember and Work entities. Justify your selection.

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answer:Identifier for Choir Member: Last Name & First Name Identifier for Work: Name Of Work & Composer Concatenated identifiers were chosen to increase the odds that the identifiers will be unique. It is hoped that there will not be two members of the choir with the exact same first and last names. Also, the combination of composer name and name of work are assumed to be unique.

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