What are file locking mechanisms and how do they work?

What are file locking mechanisms and how do they work?

File locking mechanisms are techniques used to control access to files in a multi-user environment. They prevent conflicts by ensuring that only one process can modify a file at a time.

Why is file locking important in a database?

File locking is crucial in databases to maintain data integrity. It prevents multiple transactions from altering the same data simultaneously, which could lead to inconsistencies.

Can you explain the difference between advisory and mandatory locking?

Advisory locking allows processes to lock files voluntarily, while mandatory locking enforces restrictions at the system level, preventing access unless a lock is released.

What happens if a process tries to access a locked file?

If a process attempts to access a locked file, it will either be blocked until the lock is released or receive an error, depending on the type of lock and the system's configuration.