What are Filegroups in SQL?

What are Filegroups 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.

How many types of filegroups are there in SQL Server?

There are two types of SQL Server filegroups: primary and user-defined. Primary filegroup includes all pages for system tables, primary data file and all other files that are not part of any other filegroup.

What is the benefit of using filegroups?

Advantages of Using Filegroups If files in different filegroups are on different disks, disk pressure can be distributed. DBCC CHECKFILEGROUP operations are performed for different filegroups, and the same database can process multiple processes in parallel, reducing the maintenance time for big data.

What is MDF NDF and LDF in SQL Server?

A Microsoft SQL database consists a primary data file (mdf) a secondary data file (ndf) and a transaction log file (ldf).