What is difference between MDF and NDF?

What is mdf and NDF in SQL Server?

A Microsoft SQL database consists a primary data file (mdf) a secondary data file (ndf) and a transaction log file (ldf). For this article, we will concern ourselves with the mdf and ldf files. MDF stands for Main Database File and contains all the information in a database.

What is mdf LDF and NDF?

mdf - master data file. ldf - log data file. and NDF -- NOT master data file.

What is mdf database?

mdf extension is a Master Database File used by Microsoft SQL Server to store user data. It is of prime importance as all the data is stored in this file. The MDF file stores users data in relational databases in the form columns, rows, fields, indexes, views, and tables.

Where is the MDF file located?

Default Location of MDF File in SQL Server Files that are common and used by all instances on a single system are installed inside the folder :\Program Files\Microsoft SQL Server\nnn\.