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Data Coverage and Limitations

Data Coverage​

The following retention periods apply to source data stored in Delta tables:

  • Semantic Layer: All available years of data

Data Availability in Databricks and ADLS​

Data SourceData available for yearsLast Refreshed
State of Oral Health Equity in America Survey2021, 2022, 2023, 2024 and 202509-12-2025

Notes:

  • **State of Oral Health Equity in America Survey ** Bronze and Silver layers are stored as parquet files in Blob containers.