File type: Access Lock File, IBM Works for OS/2 Data Filer File, RPG Maker Database File, Settler for Windows Temporary File, TrueVector Log Database, VisiTrax Music Library Database.
Microsoft Access is a Database Management System that provides a relational database management system for applications. It uses LDB files for locking mechanism in locking database files that are currently open or have database connections made to it using the ODBC protocol.
Locking is done in order to maintain data consistency and ensure that multiple users can't write to the database simultaneously and end up loosing data. This file extension is also used by several applications like IBM Works for OS/2, RPG Maker, Settler as a database file for storing user database information.