Object Process Methodology - Cardinality

Cardinality

OPM supports cardinality constraints, meaning a way to indicate to what extent two objects can relate to each other. In OPM these constraints are called participation constraints. The following constraints can be formulated:

  • 1 to 1
  • 1 to many
  • 1 to fixed number
  • many to many
  • fixed number to fixed number
  • Optional (expressed as: ?)

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