# Data Domains

A data domain is a logical grouping of related data — a family of schemas, their tables, and the owning team. Knowing your question’s domain tells you which schemas to query and which role you need, since access is granted per schema.

## What a domain is

Each dedicated domain page covers the data model (schemas, tables, materialization), access and RBAC, and quality rules. General warehouse selection, role hierarchy, and cross-domain query patterns live on the **Architecture Overview** and **Schema Reference** pages.

## Domains with a dedicated page

- **De-Identified Data (DEID)** — the de-identified mirror of the production warehouse, with expert-determination transforms and PHI column mapping. Datavant tokenization is documented alongside.
- **Clinical LLM Data** — LLM-extracted clinical events, materialized as 30 tables in the `CLINICAL_LLM` schema, including the source `LLM_EXTRACTION_RAW` table. Semantic views support Cortex Analyst.
- **Oncology Products** — the Signatera, Altera, and Latitude product bases in `LIMS_PUB` (MRD / ctDNA, tissue CGP, methylation MRD). Covered on the **Oncology Products** page.
- **Gene Expression (RNA-seq)** — Salmon gene / transcript expression facts and run/QC dims in the `RNASEQ` schema. Covered on the **Gene Expression (RNA-seq)** page.

## Other domains

These are deployed in PROD; refer to the **Schema Reference** for their tables:

- **VARIANTS** — genomic variant calls and genetic ethnicity tables. Query patterns are on the **Genomics (VARIANTS) Queries** page.
- **LIMS Foundation & Cohorts** — `LIMS_PUB` is the foundation layer; `LIMS_COHORTS` is the partner-mart layer.
- **ADS Clinical Abstractions** — `ADS` and `ADS_STAGING` hold clinical abstraction aggregations.
- **Salesforce Provider Data** — sourced from `DATA_SHARE.SALESFORCE`, staged into `LIMS_PUB.SF_PROVIDER_AGG`.
- **Kepler Bioinformatics** — sourced from `DATA_SHARE.KEPLER_DASHBOARD`, staged in `KEPLER_STAGING`.