Opening a K03 File

The K03 file type is primarily associated with Clarion.

K03	File extension: K03
	File type:	DOS Database Key File

What is a K03 file

K03 files mostly belong to Clarion by SoftVelocity. The .DAT file is usually associated with .K## (##=numbers) key files that are indexes into the data. There may also be a .MEM memo file. This is a structure used by DOS versions of the software. If the .K## files are not available and are not automatically rebuilt you can use the oldest DOS version of Clarion Professional Developer to build them.

How do you open K03 files?

You need a suitable software like Clarion to open a K03 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your K03 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a K03 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online K03 Text Viewer

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Online File Viewer

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Programs that open and convert K03 files:

Clarion by SoftVelocity
See the previous paragraphs to learn more about the main application.
Tonline DB File

Technical Data for K03 File Extension

Related files:

k01, k02, k04

Related links:

Clarion Magazine, Clarion Information

a k03 DOS Database Key File is a special file format by SoftVelocity and should only be edited and saved with the appropriate software.

How to solve problems with K03 files

Associate the K03 file extension with the correct application.
Update your software that should actually open dos database key files. Because only the current version supports the latest K03 file format. Search, therefore, e.g. on the SoftVelocity manufacturer website after an available Clarion update.
To make sure that your K03 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .K03 file online - secure, fast, and no downloads needed.