What is a filegroup?

What is a filegroup and what is it used for?

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 a database filegroup?

A filegroup is a logical structure to group objects in a database. ... You can have multiple filegroups per database. One filegroup will be the primary, and all system tables are stored on it. Then, you add additional filegroups.

What is a filegroup name the two main types of filegroups?

Primary and Secondary Filegroups. A primary filegroup contains the primary datafile (mdf) and possibly secondary datafiles (ndf). All system tables are allocated to the primary filegroup. A secondary filegroup (also called a user-defined filegroup) contains secondary datafiles (ndf) and database objects.

How do I find the filegroup in SQL Server?

How to check SQL Server Filegroup file sizes1SELECT sdf. name AS [File_Name],2sdf. size /128 AS [Size_MB],3fg. name AS [FileGroup_Name],4sdf.physical_name as [File_physical_name]5FROM sys.database_files sdf.6INNER JOIN.7sys.filegroups fg.8ON sdf.data_space_id=fg.data_space_id.How to check SQL Server Filegroup file sizes

What is the purpose of secondary data file?

Secondary data files are optional and can be used to spread data across multiple files/disks by putting each file on a different disk drive. SQL Server databases can have multiple data and log files, but only one primary data file.

What is filegroup backup in SQL Server?

Overview. In addition to doing "File" backups you can also do "Filegroup" backups which allows you to backup all files that are in a particular filegroup. By default each database has a PRIMARY filegroup which is tied to the one data file that is created.

What is the benefit of using filegroups?

The big benefit of filegroups is to separate database objects. You can put one table or a set of tables on one FG, and indexes on another, or some other configuration. You can also choose to put large object data on its own FG.

What do I do with .SQL file?

A SQL file contains Structured Query Language (SQL), which is a language used to access and modify information in a database. It stores SQL statements for creating or modifying database structures, insertions, updates, deletions, or other SQL operations.