How do transactions affect concurrent operations in a database?

Transactions impact concurrent operations by introducing locking mechanisms to ensure

that multiple transactions don't interfere with each other and cause inconsistent data. This

affects concurrency in several ways:

• Locking: Transactions may lock rows or tables to prevent conflicting changes,

leading to possible delays for other transactions.

• Deadlocks: When two or more transactions are waiting for each other to release

locks, causing a cycle of dependency. This can be automatically detected and

resolved by the DBMS.