Transactions and ACID properties - MySQL - Quiz

Transactions in MySQL are used to group multiple SQL statements into a single logical unit of work. They ensure that all the statements within the transaction are executed as a single atomic operation, providing data consistency and integrity.

ACID stands for Atomicity, Consistency, Isolation, and Durability. These are the four properties that ensure the reliability and integrity of database transactions.

Consistency is the ACID property that ensures that a transaction brings the database from one consistent state to another. It guarantees that all the data modifications within the transaction adhere to the defined rules and constraints, maintaining data integrity.

Isolation is the ACID property that ensures that concurrent execution of transactions does not result in data inconsistency. It provides each transaction with a view of the database as if it were executing in isolation, preventing interference from other transactions.

Isolation is the ACID property that ensures that a transaction's effects are not visible to other transactions until it is committed. It provides a level of data isolation and protects the integrity of concurrent transactions.

Atomicity is the ACID property that ensures that a transaction is either fully completed or fully rolled back in case of a failure. It guarantees that all the changes made by the transaction are either applied to the database or none of them are applied.

Isolation is the ACID property that ensures that concurrent execution of transactions does not result in data anomalies such as dirty reads and non-repeatable reads. It provides transactional isolation, preventing interference between concurrently executing transactions.

Durability is the ACID property that ensures that once a transaction is committed, its changes become permanent and cannot be undone. It guarantees the persistence of transactional data, even in the event of system failures.

Atomicity is the ACID property that ensures that a transaction can be divided into smaller, independent units of work. It guarantees the indivisibility and all-or-nothing behavior of a transaction.

Consistency is the ACID property that ensures that a transaction brings the database from one consistent state to another, without violating any data rules or constraints. It maintains the integrity and validity of the database throughout the transaction.