Return to Transaction Journaling

Journaling, in the context of file systems and database management systems (DBMS), refers to a technique used to ensure the integrity and recoverability of data in the event of system crashes or failures. With journaling, every modification or transaction made to the file system or database is first recorded in a journal or log file before being applied to the main data structure. This journal file acts as a record of changes, allowing the system to replay or roll forward committed transactions and undo or roll back uncommitted transactions during recovery. Journaling ensures that data modifications are logged in a sequential manner, providing a reliable mechanism for recovering data and maintaining data consistency. It is commonly used in file systems, such as journaling file systems, and database systems, such as transaction journaling in DBMS, to enhance data durability and recoverability. s://en.wikipedia.org/wiki/Journaling_(computing)