Database Management Quiz: Transactions, Recovery, and Security

ACID properties: Atomicity, Consistency, Isolation, Durability

The Two-Phase Commit protocol ensures that all involved databases either commit or abort a transaction, maintaining consistency across distributed systems.

The locking mechanism is used to control concurrent access to shared data, preventing conflicts and ensuring serializability of transactions.

<p>Serializability of transactions refers to the property that the execution of concurrent transactions results in a final state that could have been achieved if the transactions were executed one at a time. It is significant in database management as it ensures that the concurrent execution of transactions does not lead to inconsistent or incorrect database states.</p> Signup and view all the answers

<p>The Two-Phase Commit protocol is a distributed algorithm that ensures all participating nodes either commit or abort a transaction. It plays a vital role in ensuring atomicity and consistency in distributed transactions by coordinating the decision-making process across all nodes, thus preventing partial commit scenarios.</p> Signup and view all the answers

<p>The locking mechanism is crucial in database management as it helps in managing concurrent access to shared data by ensuring that only one transaction can access a data item at a time. It addresses concurrency-related problems by preventing conflicting operations, such as read and write conflicts, and ensuring data consistency and integrity.</p> Signup and view all the answers