Ingres Modify Table/Index file
File type: Miscellaneous file
An m?? file is an internal Ingres MODIFY table/index file associated with Ingres Database for Microsoft Windows.
Ingres creates and uses this file during operations that modify the storage structure of a table or index.
File type category:
Miscellaneous file
Date updated: September 24, 2026
The m?? file format is associated with Ingres software by Computer Associates International, Inc. It is used by the Ingres database system while a table or index is being modified.
The file is an internal database-management file rather than a document intended for direct editing. Ingres uses it as part of the work involved in rebuilding or changing a table or index, alongside the other physical files that make up an Ingres database.
Because its contents are managed by Ingres, the file should remain in the database location where the software created it. It is not a general-purpose interchange format.
An m?? file should be opened through the Ingres Database installation that created it, using Ingres database administration or query tools. It cannot be meaningfully viewed in a text editor or opened as a standalone document.
Do not rename, move, or edit the file manually. If it is encountered outside its database, the appropriate way to inspect its contents is to access the corresponding database through Ingres on Microsoft Windows.
There is no sensible standalone conversion for an m?? file. It is an internal Ingres file used during table or index modification, not a portable data-exchange format.
To move the underlying database data, use Ingres database export or unload facilities and import or load the resulting data into another Ingres database. Do this through Ingres rather than converting the m?? file directly.
Software applications that handle other tasks involving m?? files:
Microsoft Windows
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