Open K4 file

The most common choise: DataFlex index

How to open DataFlex index .k4 files

Have you had trouble opening the k4 file on your computer? What are k4 files? We explain what they are and recommend software that we know will open them.

What is k4 file?

A k4 file extension is related to DataFlex, a 4GL Object Oriented database programming language. A k4 file stores index.

DataFlex index description

DataFlex index files have a .k* extension. The * of k* is a one or two digit number. Values of k* will range from K1 through K15.

In DataFlex 2.x, the k10 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.

Suggested software to open k4 file


A relational, 4GL Object Oriented database programming language

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

Only original software

Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.