FHIR Schema is a format designed to simplify the implementation and validation of FHIR resources. It is heavily inspired by the design of JSON Schema and introduces a more developer-friendly representation of FHIR StructureDefinitions.
Key features of FHIR Schema include:
Simplified StructureFHIR Schema represents FHIR resources and their elements in a more straightforward and intuitive manner compared to FHIR StructureDefinition. Each element is represented as a property of the resource with its type specified directly. This representation is similar to how data structures are typically defined in programming languages.
Nested ElementsFHIR Schema provides a clear and simple way to represent and validate nested elements in FHIR resources. This is a key requirement for many healthcare data use cases.
Identify and label arrays. Most non-XML implementations distinguish between arrays and singular elements, so it's beneficial to precalculate this distinction.
Clear Implementation SemanticsFHIR Schema offers clear semantics for implementing FHIR validation rules. This clarity can make it easier for developers to create robust and reliable FHIR implementations.
Source of metadataThis is essential for FHIRPath, CQL, and code-generation.
In summary, FHIR Schema is a format that aims to make FHIR more accessible and easier to work with for developers, potentially leading to improved interoperability of healthcare systems.