Fact-Based Modelling
For Fact-Based Modelling (FBM) practitioners, UMS is a logical model that carries the information needed to derive Value Types, Entity Types, Fact Types (including Fact Type Readings), and various Constraints.
Mapping
Section titled “Mapping”| UMS concept | FBM interpretation |
|---|---|
| Entity type | Entity Type or Objectified/Nested Fact Type |
Properties |
Binary Fact Types to Value Types, or as Value Types referenced from the Roles of an Objectified/Nested Fact Type |
PrimaryKey |
Internal Uniqueness Constraint, or External Uniqueness Constraint |
UniquenessConstraints |
Named Internal or External Uniqueness Constraint |
Relationships |
Binary Fact Types linking Entity Types and/or Objectified/Nested Fact Types |
| Relationship type | Objectified/Nested Fact Type |
FactTypeReadings |
Fact Type Readings for the Fact Types created for Properties in the ER/LPG view |