Data file
What is a .ddoc file?
A .ddoc file is a SK-XML (version 1.0). This is a data file — structured information used by a program rather than read directly. Confusingly, this extension has been used by 4 different formats over the years — they're all listed below.
This extension has been used by more than one format
4 different formats have claimed .ddoc over the years, so two files with the same extension aren't necessarily the same kind of thing.
How to open a .ddoc file
- Start with the program that produced it; that's almost always the right tool.
- Open it in a text editor to see whether it's readable text or binary.
- For database formats, DB Browser for SQLite or LibreOffice Base can often import it.
The registry records this extension against SK-XML, DIGIDOC-XML, DIGIDOC-XML and others, so software from that family is the most likely match.
How to convert a .ddoc file
- If you can view the data, exporting to .csv is usually the most portable option.
The technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .ddoc.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| SK-XML | 1.0 | — | fmt/1230 |
| DIGIDOC-XML | 1.1 | — | fmt/1231 |
| DIGIDOC-XML | 1.2 | — | fmt/1232 |
| DIGIDOC-XML | 1.3 | — | fmt/1233 |