What is a BAK file? A “.bak” file, in the context of Microsoft SQL Server, is a backup file format used to store copies of a SQL Server database. These files contain a snapshot of the database at a specific point in time, including its schema, data, and other related information. They are generated using SQL Server’s built-in backup and restore functionality and serve several crucial purposes: Data Recovery: .bak files provide a means to recover a database in case of data loss, corrupti...