{
  "schema_version": "1.0",
  "provider": "calcofi",
  "dataset": "calcofi-db-release",
  "primary_keys": {
    "sample": "sample_key",
    "obs": "obs_id",
    "sample_measurement": "sample_measurement_id",
    "measurement_type": "measurement_type",
    "obs_attribute": "obs_attribute_id",
    "taxon": "taxon_key",
    "dataset_taxon": "ds_taxon_key",
    "region": "region_key",
    "grid": "grid_key",
    "cruise": "cruise_key",
    "ship": "ship_key",
    "obs_bio": "obs_id",
    "obs_env": "obs_id",
    "obs_ctd_full": "obs_id",
    "obs_mets_full": "obs_id",
    "sample_root": "root_id",
    "sample_spatial": ["root_sample_key", "spatial_key"],
    "spatial": "spatial_key",
    "spatial_attribute": ["spatial_key", "fld"],
    "climatology": ["dataset_key", "grid_key", "month", "depth_bin", "measurement_type"],
    "dataset": "dataset_key",
    "lookup": "lookup_id",
    "taxon_group": ["taxon_group_key", "taxon_key"]
  },
  "foreign_keys": [
    {
      "table": "sample",
      "column": "parent_sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "sample",
      "column": "root_sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs",
      "column": "sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "sample_measurement",
      "column": "sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "sample_measurement",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "obs",
      "column": "taxon_key",
      "ref_table": "taxon",
      "ref_column": "taxon_key"
    },
    {
      "table": "obs_attribute",
      "column": "sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs_attribute",
      "column": "taxon_key",
      "ref_table": "taxon",
      "ref_column": "taxon_key"
    },
    {
      "table": "obs_attribute",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "dataset_taxon",
      "column": "taxon_key",
      "ref_table": "taxon",
      "ref_column": "taxon_key"
    },
    {
      "table": "taxon",
      "column": "parent_taxon_key",
      "ref_table": "taxon",
      "ref_column": "taxon_key"
    },
    {
      "table": "taxon_group",
      "column": "taxon_key",
      "ref_table": "taxon",
      "ref_column": "taxon_key"
    },
    {
      "table": "sample",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "sample",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "obs",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "obs",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "obs",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "sample",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "sample_measurement",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "obs_ctd_full",
      "column": "sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs_ctd_full",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "obs_ctd_full",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "dataset_taxon",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "sample_spatial",
      "column": "root_sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "sample_spatial",
      "column": "spatial_key",
      "ref_table": "spatial",
      "ref_column": "spatial_key"
    },
    {
      "table": "sample_root",
      "column": "root_sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs_bio",
      "column": "root_id",
      "ref_table": "sample_root",
      "ref_column": "root_id"
    },
    {
      "table": "obs_env",
      "column": "root_id",
      "ref_table": "sample_root",
      "ref_column": "root_id"
    },
    {
      "table": "obs_bio",
      "column": "sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs_env",
      "column": "sample_key",
      "ref_table": "sample",
      "ref_column": "sample_key"
    },
    {
      "table": "obs_bio",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "obs_env",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "obs_bio",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "obs_env",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "obs_bio",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "obs_env",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "obs_bio",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "obs_env",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "obs_bio",
      "column": "taxon_key",
      "ref_table": "taxon",
      "ref_column": "taxon_key"
    },
    {
      "table": "climatology",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "climatology",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "climatology",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "sample",
      "column": "station_uuid",
      "ref_table": "sample",
      "ref_column": "source_uuid"
    },
    {
      "table": "spatial_attribute",
      "column": "spatial_key",
      "ref_table": "spatial",
      "ref_column": "spatial_key"
    },
    {
      "table": "obs_mets_full",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "obs_mets_full",
      "column": "measurement_type",
      "ref_table": "measurement_type",
      "ref_column": "measurement_type"
    },
    {
      "table": "obs_mets_full",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "obs_mets_full",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "obs_ctd_full",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "obs_ctd_full",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "sample_root",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    },
    {
      "table": "sample_root",
      "column": "cruise_key",
      "ref_table": "cruise",
      "ref_column": "cruise_key"
    },
    {
      "table": "sample_root",
      "column": "grid_key",
      "ref_table": "grid",
      "ref_column": "grid_key"
    },
    {
      "table": "sample_spatial",
      "column": "root_id",
      "ref_table": "sample_root",
      "ref_column": "root_id"
    },
    {
      "table": "cruise",
      "column": "ship_key",
      "ref_table": "ship",
      "ref_column": "ship_key"
    },
    {
      "table": "obs_attribute",
      "column": "dataset_key",
      "ref_table": "dataset",
      "ref_column": "dataset_key"
    }
  ]
}