A daily updated filename extension database!

DDX file extension

The table below provides useful information about the .ddx file extension. It answers questions such as:

  • What is the .ddx file?
  • What program do I need to open a .ddx file?
  • How can the .ddx file be opened, edited or printed?
  • How can I convert .ddx files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Alpha Five Data Dictionary Index

DDX file is an Alpha Five Data Dictionary Index. Alpha Five is a beginner friendly application development environment.
Application: Alpha Five
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
DDX aliases:
DDX related links:
DDX related extensions:
Lotus Approach 97 Document

Microsoft Access Database

SlamDB Database

Alpha Five Set Index

Alpha Five Set Object

Resort Software Database

General Database File

Pervasive SQL Database

Alpha Five Database

Alpha Five Library

Other types of files may also use the .ddx file extension.

🚫 The .ddx file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cdx, dcx, dd, dda, ddc, ddd, dds, ddz, dex, dfx, drx, dsx, dvx, dwx, dx

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

CorelDraw Compressed Drawing
ChemDraw Exchange Document
Microsoft DirectX DirectDraw Surface
dBASE Compound Index
MAP Service Document
Alpha Five Table Index
Amazon Lumberyard DirectDraw Surface Data
DaVinci Resolve eXchange File
Lucene Field Index
Final Draft v8 Document

🔴 Can't open a .ddx file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .ddx file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .ddx file extension, write to us!

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