Haste Health implements the FHIR R4 data model as the foundation for all healthcare data exchange. FHIR (Fast Healthcare Interoperability Resources) provides a modern, RESTful approach to healthcare interoperability with rich, extensible resource types.
Haste Health's access control system uses three core resources to manage user identity and authorization across projects.
Haste Health can validate resources against FHIR profiles — StructureDefinition resources that constrain a base FHIR type with tighter cardinality, fixed values, patterns, and slicing rules.
Haste Health can flatten FHIR resources into tabular rows using ViewDefinition, the SQL on FHIR implementation guide's resource for describing a "view" over FHIR data. A ViewDefinition is itself a FHIR resource — you create it like any other resource, then run it to get back CSV, JSON, or NDJSON rows instead of nested FHIR JSON.