Question: Database Processing, 14th edition, Kroenke and Auer, 2016 chapter 5 problem 57b Modify your answer to A to include entities SENDER and SUBJECT. Specify the

Database Processing, 14th edition, Kroenke and Auer, 2016 chapter 5 problem 57b

Modify your answer to A to include entities SENDER and SUBJECT. Specify the identifiers and attributes of entitites and the types and cardinalities of the realtionships. Explain which cardinalities can be inferred from Figure 5-54 and which need to be checked out with users.

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