{
  "table_description": "This table contains metadata about each IDC data release version. Each row corresponds to one IDC version and captures when that version was created. This index can be used to correlate data in other indexes (which include idc_version columns) with the corresponding release timestamps.",
  "columns": [
    {
      "name": "idc_version",
      "type": "INTEGER",
      "mode": "NULLABLE",
      "description": "IDC version number identifying the data release"
    },
    {
      "name": "version_timestamp",
      "type": "STRING",
      "mode": "NULLABLE",
      "description": "timestamp when this IDC version was created"
    }
  ]
}