MapInfo TAB format
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The MapInfo TAB format is a popular geospatial vector data format for geographic information systems software. It is developed and regulated by MapInfo as a proprietary format.
[edit] File components
The basic file components for a MapInfo Professional data set are established by the two basic environments for working in Mapinfo; "Browser view" and "Mapper View".
As with most other GIS packages, several files are required to allow the user to open a data set for viewing within Mapinfo Professional. The most basic view would be the browser view only. This environment provides storage of attribute or object data and is represented like a spreadsheet. Only data can be seen in a tabular format with this environment, no geographic information is available at this point.
Minimum files required for the basic Mapinfo browser environment:
- .DAT (The file which stores the attribute data)
- .TAB (The ASCII file which is the link between all other files and holds information about the type of data file )
To view geographic information (the graphic representation of data) in Mapinfo Professional, two additional files are required and added to the basic requirements for simply viewing data.
Minimum files required to view a map with the data previously discussed:
- .ID (Stores information linking graphic data to the database information)
- .MAP (Stores the graphic and geographic information needed to display a map on the users screen)
- .IND (Optional index files for tabular data).
So, one could say, the basic file set for viewing data and its graphic representation within Mapinfo Professional requires a minimum of four files, the *.DAT, *.TAB, *.ID and *.MAP
