Data Warehouse Schema Governance overview

Governs schema changes to the shared data warehouse — requiring schema change proposals with impact analysis before DDL execution, validating naming conventions and type standards against the warehouse style guide, running backward-compatibility checks to ensure existing dashboards and downstream consumers remain functional, coordinating migration windows with dependent teams, maintaining a schema changelog with version tags, and enforcing column-level documentation requirements for discoverability. Produces schema change review records, compatibility test results, and warehouse schema documentation updates. Excludes ETL pipeline modifications.