# Logical Record Architecture for Health and Social Care
## Discharge Summary Release 0.02

Contents
The content of this release is not comprehensive and is not fully validated and must not be used in live system implementations.
# Reference Model Class: DomainModelRelationship
A semantic relationship between two Domain Model class instances. ## Specializes ## AnyDomainModelRelationship ## Attributes
Name | Data type | Occurs | Description
--- | --- | --- | ---
lower | Integer | 1..1 | The minimum allowable number of instances of an instance of this class.
upper | UnlimitedNatural | 1..1 | The maximum allowable number of instances of an instance of this class.
## Constraints
Type | Name | Specification
--- | --- | ---
Instance is a root class, therefore use of association end generalization is prohibited. | Initial value | inv: self.generalization.oclIsUndefined()
## Reference Model Type ##