We have found one software suitable in our database for this conversion.
Microsoft SQL Server databases (.mdf) can be exported or converted to Comma Separated Value files (.csv) with powerful conversion programs, such as the Full Convert Enterprise.
Also it may be possible that some database management tools offer export of the data from .mdf databases to CSV format.
MDF
An mdf file extension is used for a database file format for Microsoft SQL Server, relational database server, developed by Microsoft, with latest version being 2016.
CSV
Files with csv extension are text data files in common Comma Separated Value file format. Simple text file with values divided by comma, often used as an import/export format.