Question

Whenever a transaction is submitted to a DBMS for execution, the ___ is responsible for making sure that either all the operations in the transaction are completed successfully and their effect is recorded permanently in the database, or that the transaction does not have any effect on the database or any other transactions.

1) Transaction Manager
2) Database Administrator
3) Query Optimizer
4) Transaction Coordinator

Answer 1

The Transaction Coordinator ensures that all operations in a transaction are completed successfully or that no effect occurs, preserving the ACID properties of transactions within the DBMS.

Step-by-step explanation:

When a transaction is submitted to a Database Management System (DBMS) for execution, the Transaction Coordinator (option 4) is responsible for ensuring that either all the operations in the transaction are completed successfully and their effect is recorded permanently in the database, or that the transaction does not have any effect on the database or any other transactions. The essential function of the Transaction Coordinator is to maintain the ACID properties (Atomicity, Consistency, Isolation, Durability) fundamental to transaction processing. A Transaction Manager, which can be another term for Transaction Coordinator, typically provides this functionality as part of the DBMS.