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File Extension

LDB File Format

Lock file (Microsoft Access)

LDB file format icon

LDB is a file extension for a lock file format used by Microsoft Access database to indicate records in a shared database that are in use  by another user. The LDB file also stores information about what user has the record in question locked.

The purpose of a record lock is preventing users from editing the same data simultaneously and thereby avoiding unexpected data loss or corruption.


Learn more about LDB files: offers this Fast Guide to avoiding data integrity gotchas.

IT Knowledge Exchange maintains a FAQ about record locks.

Visit the Microsoft Access webpage.

This was last updated in August 2010
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