Data reference
The Lakehouse consists of multiple namespaces (schemas), where each namespace contains metadata for a specific use case. This reference provides an overview of the available namespaces in the Lakehouse, their contents, and their use cases.
ENTITY_METADATA
Raw layerRaw metadata tables for every Atlan asset, mapped directly to the Atlan metamodel. Use this namespace when you need the latest and most detailed technical view of assets and schemas.
ENTITY_HISTORY
HistoryHistorical snapshots of ENTITY_METADATA tables with up to 90 days of change history. Use this namespace to understand how metadata evolves over time and to support audit or trend analysis.
GOLD
Semantic viewsCurated, pre-materialized tables that simplify Lakehouse access. Built natively into the catalog with real-time sync. Use this namespace when you want consumption-ready tables for dashboards, reports, and AI assistants.
USAGE_ANALYTICS
UsageProduct usage events and identity snapshots for customer adoption, engagement, retention, and health analyses.
OBSERVABILITY
Job metricsWorkflow and job execution metrics including DQ scores, sync health, and pipeline performance. Use this namespace to monitor Lakehouse job health and data quality trends.