What is the difference between a natural key and an invented key? Which type is most commonly used in business information processing?
Answer to relevant QuestionsWhat is a foreign key? Why are foreign keys used or required in a relational database? Are duplicate foreign key values allowed? Why or why not?What is relational database normalization? Why is a database schema in third normal form considered to be of higher quality than a UN normalized database schema?What is an association class? How is association classes used to represent many-to-many relationships in an object database?What additional database management complexities are introduced when database contents are replicated in multiple locations?Visit the Web site of an online catalog vendor similar to RMO (such as www.llbean.com) or an online vendor of computers and related merchandise (such as www.cdw.com). Browse the online catalog and note the various types of ...
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