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Keys

posted Oct 24, 2011, 1:50 PM by Eddie Woo
What does a database have in common with a door? Please complete the following tasks!
  1. Outline the purpose of keys in a database.
  2. Describe candidate keys, distinguishing between the different kinds.
  3. Explain how keys relate to relationships within a relational database.
  4. Define sorting keys.
  5. Outline three examples of data that would be suitably represented in a relational database, and for each example identify instances of the three different kinds of relationships.
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