Logical Data Modeling - Equivalence Relationship (Equality)

Data System Architecture


The equivalence relation is a relationship between two entities.

The equivalence relation is also known as:

  • is equal to.
  • equality
  • is parallel to (for affine spaces)
  • is in bijection with - bijection
  • isomorphy


An equivalence relation is a binary relation that is:

Computer language

  • In a language grammar, the equality relationship is tested with the equal operator.
  • To be able to sort a set, the equivalence is tested.

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