# 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.
# LRA Reference Models
Reference Models form part of the Production Environment (PE) infrastructure and serve to formalise the construction and interpretation of Domain Models (defined in the Technical Model Artefacts package) by defining the basic structures, semantics and constraints to which Domain Models must conform. The LRA defines Data Types, Care Components and Participants Reference Models. In addition the Data Types and Care Components Reference Models are derived by constraint from the imported Reference Models ISO 21090 and EN 13606-1 respectively. lra datatypes iso21090 flavors uml derived extended kernel technical en13606 demographics extended extract query participants