{
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  "formatName": "ESRI ArcInfo DAT File (External)",
  "version": null,
  "formatDescription": "Files which comprise part of an ArcInfo Coverage, which is a data model whose purpose is to store georelational data such as spatial location and descriptive data. Each ArcInfo Coverage resides in an ArcInfo workspace, a directory which contains two or more folders. These packages are generated using ArcGIS software, produced by Esri (https://www.esri.com/en-us/arcgis/about-arcgis/overview.) An ArcInfo coverage dataset typically has two types of .dat file: internal, which store the actual data table, and external, which contains a relative path to the data table. External .dat files follow a unique naming pattern: arcXXXX.dat, where XXXX is incrementally increasing number starting from 0000, e.g. arc0000.dat, arc0001.dat. The .dat files always come in pair with a NIT file and are both stored in an INFO directory at the root.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": "https://www.loc.gov/preservation/digital/formats/fdd/fdd000284.shtml",
  "lastUpdatedDate": "06 Jan 2022",
  "formatProvenance": null,
  "formatSourceDate": "06 Jan 2022",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Text (Structured)",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "fmt/1594",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 1933,
      "name": "ESRI ArcInfo .dat File (external)",
      "note": "BOF, offset 0, magic bytes: ../\r\nEOF, offset 0-100, magic bytes,:   .adf",
      "byteSequences": [
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          "positionType": "Absolute from BOF",
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        },
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          "maxOffset": 60,
          "byteSequence": "2E616466",
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  ],
  "externalSignatures": [
    {
      "externalSignature": "dat",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Equivalent to",
      "relatedFormatID": 2427,
      "relatedFormatName": "ESRI ArcInfo DAT File (Internal)",
      "relatedFormatPUID": "fmt/1600"
    },
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 2422,
      "relatedFormatName": "Canon Raw",
      "relatedFormatPUID": "fmt/1595"
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  ],
  "submittedBy": [
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}