Notes about the BSM file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The BSM file type is primarily associated with 'SQLMatcher' by Berryware. SQLMatcher is a database schema comparison and synchronization utility for Microsoft SQL Server. The file contains information about the two database/script references being compared and any specialized options.