Required a. Prepare the REA model to support the purchase and cash payments process. b. Show the cardinalities for all associations. c. List the tables, keys, and attributes needed to implement this model in a relational database.
Solution:-
REA model to support the purchase and cash payments process:-
Above diagram shows three event entities in Apex’s purchases and cash disbursement system. The first of these, the Order Product entity, is a support event that does not directly increase the Inventory (resource) entity. Upon recognizing the need for inventory, which sales to customers (revenue cycle) depleted, the purchasing clerk (internal agent) selects a supplier (external agent) and places the order. This act does not constitute an economic event, but is a commitment to buy. The link from the event entity to the Inventory entity indicates that the records will be adjusted to show that the items in question are on order
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