ISO/IEC 19763-16:2021

Overview

ISO/IEC 19763-16:2021 - part of the Metamodel Framework for Interoperability (MFI) - defines a metamodel for document model registration. It specifies how to register and describe document schemata (for example XML Schema and JSON Schema) within a model registry so that document-level metadata can be discovered, compared and used for interoperability. The standard is designed to be applicable to all current document model specifications and to integrate with metadata registries.

Key topics and requirements

• Metamodel scope: A focused metamodel for registering document schemata and their components (nodes, namespaces, relationships, enumerations, reuse information).
• Metaclasses: Clause 5.3 defines metaclasses such as Document_Schema, Document_Schema_Language, Document_Schema_Namespace, Node, Restricted_Node, Node_Enumeration, Node_Relationship, Schema_Reuse, and Schema_Reuse_Type. (Detailed metaclass attributes and semantics are given in Clause 5.3 and Annex A.)
• Conformance: Defines two degrees of conformance - strictly conforming and conforming - and requires an Implementation Conformance Statement (ICS) describing supported extensions.
• Integration with MFI Core and MDR: The metamodel is a specialization of MFI Core/mapping (ISO/IEC 19763-10:2014) and is intended to work with ISO/IEC 11179-3:2013 registry metamodel features.
• Documentation and examples: Annex A describes the metamodel, Annex B shows relationships to the MDR metamodel, and Annex C provides registration examples.

Practical applications

• Register and manage XML and JSON schemata and their metadata in a standardized way.
• Support interoperability between systems by enabling discovery of document models and registration of mappings where document universes overlap.
• Facilitate schema reuse, governance, versioning and namespace management within enterprise metadata registries.
• Provide a basis for tooling: schema registries, validation tools, modelling tools and integration middleware can implement the metamodel to improve consistency and portability.

Who should use this standard

• Data architects, integration engineers and enterprise architects who manage document-based exchanges.
• Developers and vendors of schema registries, model repositories and metadata management tools.
• Standards bodies and organizations aiming to harmonize document schemata across systems for interoperability.

Related standards

• ISO/IEC 19763 series (MFI)
• ISO/IEC 19763-10:2014 (MFI Core and mapping)
• ISO/IEC 11179-3:2013 (Metadata registries - registry metamodel)

Keywords: ISO/IEC 19763-16:2021, metamodel for document model registration, MFI, XML schema, JSON schema, metadata registry, document schema registration, interoperability.