Modeler:8/RepositoryRules

Model Well-formednes

This window shows the well-formednes rules for the active model.

---

Every fact type must have an intra UC

There must exist at least one Uniqueness Constraint on the roles within the object of fact type.

The N rule must be valid for every nominalized fact type

All roles within a nominalized fact type must be covered under a single uniqueness constraint.

The N-1 rule must be valid for every fact type

Facts are required to have at one or more uniqueness constraint over N-1 roles.

The subtype rule must be valid for every subype

In a fact type that is a subtype, all roles have a single role uniqueness constraint. For nominalized subtypes, all object type expressions concern exactly one role.

The alias of an object/fact type must be unique

Object / fact types names must be unique, this includes the alias set at the fact property dialog.

All object type expressions must be used

Object types expressions generally are created during qualification of fact expressions. This rule states that the object type expressions should be verbalized as part of another object types of fact type expression.

Non-lexical object types without totality constraints must have a fact type expressions

Object types which have no fact type expression, must be used in another fact type through a totality constraint.

The actual population of every fact type must be verbalizable

Every population tuple must be referenced in a fact type expression.

A strict equality constraint must apply on each subtype tupel

Subtypes must have a corresponding population in regard to their supertype.