dBASE Temporary File
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What is a $DB file?
A $DB file is a temporary database the dBASE database management software automatically creates while a user works on a database (.DBF file). The purpose of the file is to store changes made to a database that the software can reference to recover if dBASE unexpectedly quits due to a computer crash, loss of power, etc. When a user is done working on a database and closes it, dBASE automatically deletes the $DB file.
dBASE is a Windows program that provides various database-related capabilities, including managing databases, building programs, and compiling them. You may make many changes to a database as you work on it. To prevent your changes from being lost, dBASE introduced the $DB file type to function similarly to a safety net to preserve your changes.
NOTE: dBASE stands for "dataBased Intelligence."
How to open a $DB file
You should not attempt to open $DB files. Instead, dBASE software references the files in case the program unexpectedly quits, then loads the changes to the database (DBF file), so the changes are present when re-opening the file. Additionally, dBASE automatically deletes the $DB file.