Overview
ISO/IEC 5087-1:2023 - Information technology - City data model - Part 1: Foundation level concepts defines the foundational concepts for a common data model for cities. It specifies base ontologies, naming and identification conventions, and core semantic patterns intended to make urban data precise, unambiguous and interoperable. The standard targets the semantic integration of municipal datasets using ontology technologies as implemented in the Semantic Web (e.g., RDF/OWL concepts referenced in the introduction).
Key topics and requirements
The document structures its foundation around a set of reusable conceptual patterns and requirements that enable consistent city data modeling. Key topics include:
- Unique identifiers, namespaces and abbreviated terms - rules for unambiguous identification of city entities and vocabularies.
- Foundational ontologies and generic properties - base classes and properties used across city datasets to ensure shared meaning.
- Reusable semantic patterns (each with key classes, properties and formalization):
- Mereology pattern (part–whole relationships)
- City Units pattern (city-specific units of analysis)
- Time, Change and Recurring Event patterns (temporal modeling and change semantics)
- Location pattern (spatial referencing and linking)
- Activity and Resource patterns (events, processes, assets)
- Agent and Organization Structure patterns (people, organizations, roles)
- Agreement and Provenance patterns (contracts, data lineage)
- Formalization and implementation guidance - each pattern includes formalization notes; annexes discuss implementation alternatives and relationships to existing standards.
- Intended use of Semantic Web technologies - the standard explicitly aims to support ontology-based, machine-readable definitions to reduce ambiguity and support automated integration.
Practical applications and who should use it
ISO/IEC 5087-1:2023 is designed for organizations that need semantic interoperability across urban systems, including:
- Municipal information systems departments seeking to integrate multi‑departmental datasets.
- Municipal software designers and developers building interoperable city platforms and APIs.
- Vendors and integrators delivering smart city, urban analytics or data sharing solutions.
- Researchers and planners combining heterogeneous data for urban planning, policy analysis or service delivery.
Common applications include cross‑service data integration (transportation, utilities, social services), semantic data catalogs, city dashboards, and ontology-backed data exchange to avoid siloing and improve decision support.
Related standards and implementation notes
- ISO/IEC 5087-1 is part of the ISO/IEC 5087 series; other parts cover additional layers or profiles.
- The standard aligns with Semantic Web technologies (ontologies, RDF/OWL) and references implementation alternatives and relationships to existing standards in its annexes.
Keywords: ISO/IEC 5087-1:2023, city data model, common data model for cities, semantic interoperability, urban data integration, ontologies, Semantic Web, municipal data.
