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The relationships between entities can be organized according to the following criteria: Cardinality: maximum and minimum OR Degree: binary, ternary,...

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The relationships between entities can be organized according to the following criteria:
  Cardinality: maximum and minimum

  OR

  Degree: binary, ternary, degree 4, and so forth  (is there a unary?  Is it important?)

  OR

  Entity type: strong, weak, ID-dependent, and supertype/subtype?  ( are there more?)

  What are these different types of classifications? Do they overlap, or do they each tell us something unique about the entity relationship? Why is it important to classify each of these types in an ERD (entity relationship diagram) model?

  Pick one and explain in more detail, with examples and references.

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The relationships between entities can be organized according to the following criteria:
Cardinality: maximum and minimum
OR
Degree: binary, ternary, degree 4, and so forth (is there a unary? Is it...

This question was asked on Jul 20, 2016 and answered on Jul 20, 2016 for the course MIS582 582 at Keller Graduate School of Management.

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