What is the purpose of the secondary data file?

What is the purpose of secondary data file in SQL?

Secondary data file OR NDF file Secondary data files are useful when we want to stripe the data across multiple drives of the database server. For example, if you want to keep the tables on X drive and indexes on Y drive, then you can keep the tables on the primary data file and indexes on the secondary data file.

What is the purpose of primary data file?

The primary data file is the starting point of the database and points to the other files in the database. Every database has one primary data file. The recommended file name extension for primary data files is .

What is the purpose of a filegroup in SQL Server?

The filegroup contains the primary data file and any secondary files that aren't put into other filegroups. User-defined filegroups can be created to group data files together for administrative, data allocation, and placement purposes.

What is secondary file group in SQL Server?

A secondary filegroup (also called a user-defined filegroup) contains secondary datafiles (ndf) and database objects. The default filegroup contains objects which were created without an assigned filegroup. The primary filegroup is the default filegroup unless another filegroup is specified.