Background
OpenMRS has a mechanism to map concepts to external sources (concept_map
tables); however, OpenMRS does not yet have a means to map metadata to external sources.
Design
The following design was proposed on the Design Forum 2015-06-22:
Notes on data model design:
metadata_source
is used to define a unique source (authority) for each namespace of metadata terms.name
should be fully qualified and universally unique.
metadata_term
table provides both the term and its mapping to local metadata.code
should be unique within the given source.metadata_class
refers to the Java class for the metadata.metadata_reference
is a unique reference to the metadata within the class (e.g., uuid)
metadata_set
is used to define relating grouping of metadata similar to what OpenMRS has traditionally done within global properties and similar to FHIR's ValueSet for metadata terms.sort_weight
is used to optionally give members of a metadata set a reliable sequence.