NMDC BioSamples

Why This Collection Matters

nmdc_ncbi_biosamples is a BERDL database in the NMDC tenant. Harmonized NCBI BioSample metadata

What It Contains

The snapshot records 45 tables. Key tables include: annotation_terms_unified, annotation_crossrefs, annotation_hierarchies_unified, cog_categories, cog_hierarchy_flat, ec_terms, ec_hierarchy_flat, go_terms.

Best Uses

Use this page as the collection-level orientation before writing SQL, designing joins, or asking an agent to reuse this data in a hypothesis. Prefer project-backed examples and schema docs when they exist.

High-Value Joins

Start with stable identifiers named in the schema, then connect through the data-type pages linked below. For sparse or staging databases, record the join recipe before depending on it in claims.

Reuse And Gaps

Reuse is high value when a project turns this raw database into a stable score, mapping table, label set, benchmark, or caveat. Missing complementary data should be recorded as a data_gap page when it blocks interpretation.

Caveats

This page is generated from the current discovery snapshot and should be deepened when a project starts to rely on this database.