What is File Locking?

File Locking is a Data control Characteristic that restricts different customers from cHanging a selected report. This permits best one consumer or process get admission to to this Record at any given time. This is to save you the hassle of interceding UPDATEs at the identical files.

What Does File Locking Mean?

For example, if manner A and technique B open the same file, sySTEM A then adjustments the report and saves it. Process B, which nevertheless has the original nation report, Makes a few changes then saves it, Rendering the changes made by Procedure A misplaced.

The document locking mechanism changed into added via IBM In 1963 in Mainframe Computer Systems that used the OS/360. At the time, it was called “one-of-a-kind control.” This is a primary-come, first-served Method for file management in multiuser systems. The first manner or consumer to get right of entry to the report locks out different users from being able to get right of entry to it. When the file has been updated and manipulate has been relinquished, it will become unlocked and available for others to get right of entry to. Modern Implementation of this technique permits for multiple customers to Access the file but simplest the primary one to get entry to it is able to adjust it. Some programs allow interceding updates with all the adjustments selectively Merged later on, whether manually or mechanically.