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*Details: File format summary



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Name ESRI ArcInfo DAT File (Internal)
Other names  
Identifiers PUID:  fmt/1600
Classification Text (Structured)
Description 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 ( 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. These external files, which have extension .dat, 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. Internal .dat files usually contain the byte sequence BOF, 000000.
Byte order  
Related file formats Equivalent to ESRI ArcInfo DAT File (External)  
Technical Environment  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source National Library of Australia / National Library of Australia
Source date 20 Jan 2022
Source description  
Last updated 20 Jul 2022
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