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.NDF File Extension

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File TypeSQL Server Secondary Database File

DeveloperMicrosoft
Popularity
3.3 (6 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryDatabase Files
FormatN/A

Unknown

File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.

Definition

Secondary database file used by Microsoft SQL Server; created when the primary .MDF database becomes too large (such as when there is no disk space left); may also be manually added to the SQL Server File Group to distribute data between the two files.

More Information

NDF files are typically stored on a different hard disk or partition than the primary database file. Each NDF file uses the same filename as the corresponding MDF file, such as "mydb.mdf" and "mydb.ndf." Also, the NDF file cannot be opened by SQL Server without the MDF file attached.

Programs that open NDF files
Windows
Microsoft SQL Server 2016
Updated 5/4/2015

FileInfo - The File Extensions Database

This page contains information about the .NDF extension and its known file associations. Our goal is to help you understand what an NDF file is and how to open it.

The SQL Server Secondary Database file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

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