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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.
    • nameshould be fully qualified and universally unique.
  • metadata_termtable provides both the term andits mapping to local metadata.
    • codeshould be unique within the given source.
    • metadata_classrefers to the Java class for the metadata.
    • metadata_referenceis a unique reference to the metadata within the class (e.g., uuid)
  • metadata_setis 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_weightis used to optionally give members of a metadata set a reliable sequence.

 

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