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.ndx file extension

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dBase non-maintained index file. A .ndx file contains a non-maintained index for dBase.

.ndx files are known as non-maintained because dBase does not automatically update the index as records are inserted, deleted or updated. To maintain the index the application (or user) had to issue a "REINDEX" command.

.ndx files were widely used on dBase I, dBase II and dBase III, but have been replaced by the user of managed-indexes (.mdx files) introduced with dBase IV.

For more information see:

Can you add to this? Do you know of any applications not already listed which will work with .ndx files, view .ndx files or open .ndx files? Are you able to contribute any additional reference information or file format information about .ndx files or have you spotted any errors or omissions? If so please let us know by emailing us at feedback@cryer.co.uk - Thank you.