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July 7, 2022


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Introduction to databases, Relational Database Design Theory, course tutorial, PDF file by Jun Yang, Brett Walenz.


  • Motivation, Functional dependencies
  • Redefining “keys” using FD’s
  • Reasoning with FD’s, Attribute closure
  • A more complex example
  • Example of computing closure
  • Using attribute closure
  • Rules of FD’s, Example of redundancy
  • Decomposition, Unnecessary decomposition
  • Lossless join decomposition, Loss? But I got more rows!
  • BCNF decomposition algorithm
  • Why is BCNF decomposition lossless
  • Multivalued dependencies
  • Complete MVD + FD rules
  • An elegant solution: chase
  • 4NF decomposition algorithm

Summary on tutorial Relational Database Design Theory

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  • Relational Database Design Theory 04:00:00

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