{
  "table_description": "This table contains metadata about the collections available in IDC. Each row corresponds to a collection, and contains attributes such as the collection name, types of cancer represented, number of subjects, and pointers to the resources to learn more about the content of the collection.",
  "columns": [
    {
      "name": "collection_name",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "name of the collection"
    },
    {
      "name": "collection_id",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "unique identifier of the collection"
    },
    {
      "name": "cancer_types",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "types of cancer represented in the collection"
    },
    {
      "name": "tumor_locations",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "locations of tumors represented in the collection"
    },
    {
      "name": "subjects",
      "type": "INTEGER",
      "mode": "NULLABLE",
      "description": "number of subjects in the collection"
    },
    {
      "name": "species",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "species represented in the collection"
    },
    {
      "name": "sources",
      "type": "RECORD",
      "mode": "REPEATED",
      "description": "sources of data for the collection, including the per-source provenance record naming who contributed the data to IDC, who provided the source material, who performed de-identification, and who produced the DICOM representation"
    },
    {
      "name": "supporting_data",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "additional data supporting the collection available in IDC"
    },
    {
      "name": "program_id",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "broader initiative/category under which this collection is being shared"
    },
    {
      "name": "status",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "status of the collection (Completed or Ongoing)"
    },
    {
      "name": "updated",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "date of the last update to the collection"
    },
    {
      "name": "description",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "detailed information about the collection"
    }
  ]
}