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Unformatted text preview: One purchase request can only be made by one employee. One purchase request can have one purchase order. One purchase order can only be in one purchase request. One purchase request is caused by one check-out transaction. One check-out transaction may create a purchase request. One skill classification can have many types of equipment. One type of equipment may have zero or more skill classifications. Many-to-Many Relationship. Equip_Skill is an associative table. One type of equipment may be tracked. One tracked type of equipment is one type of equipment. One type of equipment may be untracked. One untracked type of equipment is one type of equipment....
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- Spring '10
- Biological classification, purchase request, check-out transaction