What is file group in SQL Server?

Question

Filegroups are the physical files on your disc volumes that hold SQL Server's data and can be used for backup and administrative management purposes. The first thing to know are what types of files SQL Server uses: Primary Data Files. Secondary Data Files. Log Files. 17 янв. 2017 г.

What is meant by file group 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 file group in database?

Database filegroups consist of files and database objects (tables, indexes, stored procedures, etc). Log files are never part of a filegroup because log space and data space are managed separately.

What is difference between file and filegroup in SQL Server?

tl;dr; Filegroups are a logical construct used to separate tables and indexes from each other, files are the physical construct used to store information (log & data) about the database.

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.

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