E-R Diagrams.
(40 points) Construct an E-R diagram for a Contact Management system for salespeople in our Widget Shop. The data stored in this system includes information about the widgets and customer leads. The information stored about widgets is the same as in our order fulfillment system. The information stored about customers includes their ID, name, phone numbers, address, notes, and widgets in which they are interested. Each customer will have multiple notes taken about them-but
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