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Chapter 6 Advanced Topics

6.1 Freedom of Choice: Alternative Ways to Model the Same Fact Expressions

Key Points

  • Alternative ways of modeling might be possible:
  • o During Sorting, if different Fact Types can be formed
  • § This leads to different Relational database structures
  • § Pros and cons are discussed, and a general modeling advice is given.
  • o During Analyzing, if an ‘extra’ Object Type can be formed or not
  • § This does not lead to different Relational database structures
  • § Such an ‘extra’ Object Type sometimes must be formed (see also Section 5.4).

6.1.1 Different Way of Sorting: Different Table Structures

6.1.1.1 ...

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