In a database system, a dirty read occurs when one transaction reads uncommitted changes made by another transaction. This can lead to data inconsistency and incorrect results. There are several ways to avoid dirty reads, including using locking mechanisms, such as pessimistic locking or optimistic locking, or using multi-version concurrency control (MVCC).
Avoiding dirty reads is important for maintaining data integrity and ensuring that transactions are processed correctly. Dirty reads can lead to a number of problems, including:
