.DFG File Extension
File TypeData Flask Grid File
This file is saved in a binary format, which requires a specific program to read its contents.
What is a DFG file?
Spreadsheet file created by Data Flask, a spreadsheet program designed for data authoring and migration; can include raw cell data as well as connection information for external data sources; also stores column types, primary key identifiers, and other data schema information.
The Data Flask software was last updated in 2007.