Spatial metadata is structured documentation about a geographic dataset: what it covers, when and how it was made, its coordinate system, accuracy, licensing and custodian. Standards such as ISO 19115 define exactly which of these elements to record and how, so that catalogues can index datasets and users can judge fitness for use. Undocumented data is, for practical purposes, lost data.
What metadata records
Core elements include identification (title, abstract, keywords), extent (spatial and temporal), lineage (sources and processing steps), quality (positional and attribute accuracy), the reference system, distribution formats and constraints. Lineage and quality are the elements analysts silently depend on when deciding whether data can carry a decision.
Well-kept metadata answers the questions that otherwise generate weeks of email: Who made this? From what? How accurate is it? May I use it, and whom do I ask?
The standards landscape
ISO 19115 (with its XML encoding 19139) is the international backbone for geographic metadata. Europe’s INSPIRE directive profiles it into legally mandated requirements for public datasets across member states. Catalogue services — OGC CSW and the newer OGC API Records — let portals harvest and search these records at scale.
Beyond metadata, the OGC family standardises the data services themselves: WMS, WFS, WMTS and the OGC API suite define how maps and features travel over the web, keeping multi-vendor infrastructures interoperable.
Metadata in practice
The failure mode is familiar: metadata written once for a compliance deadline, then never updated. Sustainable practice generates metadata inside the production workflow — lineage from the processing chain, extents and schemas from the data itself — leaving humans to write only the judgments a machine cannot.
For agencies, complete standards-aligned metadata is also strategic: it is what makes national data infrastructures searchable and defensible, and it is increasingly a contractual deliverable in professional data production.
Frequently asked questions
What is ISO 19115 in simple terms?
It is the international standard checklist for describing a geographic dataset — the agreed set of fields (title, extent, lineage, accuracy, CRS, licence and more) and their structure, so any catalogue or user can interpret the documentation identically.
What is INSPIRE compliance?
INSPIRE is the EU directive requiring public authorities to document and publish spatial datasets using harmonised metadata, data models and network services. Compliance means your metadata, schemas and services validate against those technical rules.
Need this done professionally?
GLOBEIR delivers this work for government and enterprise clients.