An mjs file extension is related to the Mijas 7400 costing database format.
MJS file extension - Mijas 7400 costing database
What is mjs file? How to open mjs files?
File type specification:
The mjs file extension is associated with the 7400 Costing database, developed by Mijas company.
Seems to be very rare used or obsolete file format without support from developer or producer.
This mjs file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.