Managing activity concurrency
Concurrency in databases refers to the ability of a database management system (DBMS) to handle multiple transactions or operations simultaneously without compromising data integrity. Concurrency control mechanisms are essential to ensure that multiple users or processes can access and manipulate data concurrently without causing conflicts or inconsistencies. Here are key concepts related to database concurrency:
- Isolation levels:
- Isolation levels define the degree to which the operations of one transaction are isolated from the operations of other concurrent transactions.
- Common isolation levels include READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIALIZABLE. You can think of these isolation levels as a trade-off between increased availability and lower consistency. This is because locks are used to ensure the separation of transactions in stronger isolation levels, leading to lower concurrency levels.
- Locking:
- Locks are mechanisms...
