name: DataHub Vocabulary
description: >-
  Shared vocabulary of terms used across DataHub's GraphQL, OpenAPI, REST,
  CLI, SDKs, and Actions Framework for metadata management.
terms:
  - term: Entity
    definition: >-
      A first-class object in DataHub such as a Dataset, Chart, Dashboard,
      Container, DataFlow, DataJob, MLModel, or Tag.
  - term: Aspect
    definition: >-
      A versioned, schema-defined component of an entity describing one
      facet such as ownership, schema, or status.
  - term: URN
    definition: >-
      A globally unique uniform resource name identifying an entity within
      DataHub.
  - term: Metadata Change Log
    definition: >-
      An event emitted when an aspect of an entity is created, updated, or
      deleted, consumed by ingestion and the Actions Framework.
  - term: Platform Event
    definition: >-
      A higher-level event published by DataHub describing a meaningful
      change such as an entity update or notification.
  - term: Ingestion
    definition: >-
      The process of pulling metadata from source systems and emitting it
      to DataHub through the REST or Kafka emitters.
  - term: Source
    definition: >-
      A connector configured in an ingestion recipe to read metadata from
      a system such as Snowflake, BigQuery, Looker, or Airflow.
  - term: Recipe
    definition: >-
      A YAML configuration file declaring sources, sinks, and
      transformations for an ingestion pipeline.
  - term: Lineage
    definition: >-
      The graph of upstream and downstream relationships between datasets,
      charts, dashboards, and pipelines.
  - term: Glossary Term
    definition: >-
      A business term in the DataHub glossary linked to entities for
      semantic context.
  - term: Domain
    definition: >-
      An organizational grouping of entities used for ownership and
      browsing.
  - term: Tag
    definition: >-
      A free-form label that can be applied to entities and aspects.
  - term: Action
    definition: >-
      A unit of work in the Actions Framework that responds to events on
      the metadata graph.
  - term: Emitter
    definition: >-
      A REST or Kafka client used by the Python and Java SDKs to push
      metadata to DataHub.