FILExt - The File Extension Source

Details for file extension .DDF are on this page. Because there is no central registry for file extensions and their associated programs there may be multiple entries on this page. And, because there are many (some say over a million) such associations not all may be listed here.

TIP: Click here to run a FREE scan for .DDF related errors.

Windows can't open .DDF files?
If Windows is unable to open files with the extension .DDF you may not have the appropriate program installed or, you may have registry errors. To help, we strongly recommend you run this free registry scan.

A search on the file extension you submitted shows 11 record(s). The details for each of these are shown below. The best FILExt can do for you is provide the details we know about. Selecting the information that applies to your particular situation is up to you. Use any hints provided. If the information here is not helpful, FILExt is sorry; but as a research site FILExt cannot provide personal support. If you need further information you might try the research tips on the FILExt Help Me page.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
ACDSee Use Database (Photo Disc Data File)		ACD Systems Ltd.
Specific Notes [What's This?]
A database that tracks what you do in ACDSee. If the program starts to slow down you might recover some speed by deleting this and the .DTF associated file. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
	Database	None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
ACDSee.DDF
General Notes [What's This?]
(None)
This is record 15513 last modified on 2005-03-28 and created on 2003-12-14.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
ACT! Database Definition File		Best Software CRM Division
Specific Notes [What's This?]
Windows ver 6, 5, 4, 3. Popular contact management software. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 14122 last modified on 2003-04-15 and created on 2003-04-15.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
Bitstream Fontware
Specific Notes [What's This?]
(None) Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 3047 last modified on 2003-01-14 and created on 2003-01-14.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
Btrieve Data Dictionary File		Pervasive Software Inc.
Specific Notes [What's This?]
Allows other programs to access data. Pervasive PSQL has replaced Btrieve. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 3048 last modified on 2006-01-14 and created on 2003-01-14.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
Diamond Directive File		Microsoft Corporation
Specific Notes [What's This?]
One of the files necessary to build a Microsoft cabinet (.CAB) file archive. The Diamond Directive File contains specific information required to compress your files into a cabinet (.CAB) file; the DDF file itself is not placed into the .CAB file. The file may be opened in any text editor. To build/rebuild a .CAB file, you must use the MakeCab.Exe utility. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
	Text	How To Manually Modify and Rebuild CAB Files
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 18194 last modified on 2005-07-02 and created on 2005-07-02.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
Doom Definition File
Specific Notes [What's This?]
(None) Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 3049 last modified on 2003-01-14 and created on 2003-01-14.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
GPS Pathfinder Office Data Dictionary		Trinble Navigation Limited
Specific Notes [What's This?]
The GPS Pathfinder Office software enables you to pre-plan field sessions. The data dictionary editor creates custom pick-lists, automatic repeat feature, and numeric values. In the field, the data dictionary prompts the field crew to enter specific information for data integrity and compatibility with your GIS or database. A data dictionary describes the features and attributes relevant to a particular project or job. It is used in the field to control the collection of features (objects) and attributes (information about those objects). Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 17550 last modified on 2004-10-31 and created on 2004-10-31.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
Grand Theft Auto III File		Rockstar Games
Specific Notes [What's This?]
Take-Two Interactive, Rockstar Games, Global Star Software, Gathering, Jack of All Games and related logos are trademarks of Take-Two Interactive Software, Inc. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		GTA3 Forum
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 3050 last modified on 2005-03-26 and created on 2003-01-14.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
Music Library File
Specific Notes [What's This?]
(None) Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 3051 last modified on 2003-01-14 and created on 2003-01-14.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
My Personal Diary Entry Storage File		CAM Development
Specific Notes [What's This?]
Keeps track of daily activities, notes, contacts, to-do items and virtually any other type of free-form information. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 14725 last modified on 2003-06-11 and created on 2003-06-11.

Extension: DDF
Program and/or Extension Function [What's This?]		Company [What's This?]
ProWORX Nxt Descriptor Data		Schneider Electric
Specific Notes [What's This?]
Found in the NxT directory. Recommended: Find DDF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 3052 last modified on 2003-01-14 and created on 2003-01-14.

System Info for File Extension .DDF

FILExt has been given permission to display the file extension database produced by the Associate This! program. Some of that data has already been included into the main FILExt database; but, not all. Those entries which have not yet been incorporated are shown below in the hope that they will be of some use. Data collected by FILExt on registered file extensions from user systems is also in the display. Be aware this is raw data which may require further research on your part to fully understand. In particular, look at the Program ID. Often a company will put the program's name into the short ID that Windows uses to open registered file extensions. If that's not the case, look at the complete path to the EXE file. Often, programs will install themselves into directories that give either the program or company name. The program name itself may also be used as the EXE file name. These listings are particularly important since they represent listings that are in actual use by users who have sumbitted data to FILExt and therefore these listings can point you to the most likely candidate should there be multiple entries in the FILExt main database.

General Info

• If the extension you are looking for is of the form .??_ the file is likely a compressed file and part of an install routine. When the install program runs it will expand the file and replace the underscore with the proper letter for the file type.
• If the file is sent as an audio file with any three-character extension it may be a dictation file where the extension is the dictator's initials; playable by BCB Voice Systems software (see ??? extension). The file could likewise be a dictation file in TrueSpeech format. Use Windows Sound Recorder and/or Media Player to play these back.
• If the extension you are looking for has a number at the end or is only a number and there were no results consider entering the same extension format using zero or one as some programs produce numbered split files but when the split can be extensive (e.g., .000-.999) only the first entry is in the database.

Need more information about any entries on this page? Try a Google search using terms in the above information along with words like "format," "convert," "conversion," and even "hacking." A search box is provided here for your convenience.

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