What is 'SQL Server Database Primary Data File (.mdf)' equivalent for mysql.
Assuming that you are using MyISAM
engine it should be *.myd
extension file which corresponds to data file and *.frm
corresponds to table format file.
Regardless of the storage engine you choose, every MySQL table you create is represented on disk by a
.frm
file that describes the table's format (that is, the table definition). The file bears the same name as the table, with an .frm extension. The .frm format is the same on all platforms, but in the description of the .frm format that follows, the examples come from tables created under the Linux operating system.