Give three examples that illustrate how cardinality reflects an organization's underlying business rules.
What will be an ideal response?
1) When an organization decides to purchases the same items of inventory from different suppliers, the cardinality between the Supplier and Inventory tables is M:M.
2) When a the company purchases all items of a certain type from only one supplier, the cardinality between Supplier and Inventory tables is 1:M respectively.
3) A policy that a separate receiving report is prepared for the receipt of goods specified on a single purchase order will result in a 1:1 cardinality between the receiving report and purchase order tables. If, however, multiple purchase orders are combined on a single receiving report then the cardinality between these tables will be 1: M respectively.
PTS: 1
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