About nmdc-lakehouse-schema

This repository owns the NMDC flattened-schema product: the LinkML generator, the runtime flattener that produces the declared rows, a schema-diff tool, and the generated target-schema artifact. The source model is maintained in nmdc-schema, and data loading and publication are handled by nmdc-lakehouse.

See the workflow guide for repository responsibilities, generator history, remaining template cleanup, version numbering, and the current package-adoption boundary. The TextValue contract describes scalar and repeated string columns, retained record types, validation, and migration. The transformation support guide records which shapes become columns or helper tables and where populated content can be lost.