.K9 File Extension

About K9 File Extension

The K9 file extension is associated with DataFlex and used for index files.

In DataFlex 2.x, the K9 index was always a 'batch' index, which means its contents were not updated when the datafile was updated. Batch indexes are only updated when the index is (re)created with dfindex or dfsort, depending on which version of DataFlex you have. This provided some advantages in certain situations, but most of those advantages have become obsolete with the faster computers and larger hard drives we enjoy today.
Depending on your backup medium, it can be faster to simply reindex a datafile versus restoring the file from the backup medium.

How to Open K9 Files

This file type is not meant to be opened directly. There is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files, etc.

Can K9 Files Be Converted?

As far as we know, K9 files cannot be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also, some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is, for example, the case of some DRM-protected multimedia files.

FAQ

Can I open a K9 file with any software?

No, K9 files are not meant to be opened directly.

Is it possible to convert a K9 file to another format?

No, K9 files cannot be converted to any other file format.