What does the acronym ACID stand for in database transactions?

What does the acronym ACID stand for in database transactions?

• A. Atomicity, Concurrency, Isolation, Durability
• B. Atomicity, Consistency, Isolation, Definition
• C. Atomicity, Concurrency, Identity, Durability
• D. Atomicity, Consistency, Isolation, Durability

Answer: (D)

The acronym ACID in the context of database transactions stands for Atomicity, Consistency, Isolation, and Durability. Each component plays a vital role in ensuring reliable transaction processing within a database system: - **Atomicity** ensures that all parts of a transaction are completed successfully; if any part fails, the entire transaction is aborted, maintaining the integrity of the database. - **Consistency** guarantees that a transaction will bring the database from one valid state to another, preserving all predefined rules, such as integrity constraints. This assures that only valid data is written to the database. - **Isolation** ensures that transactions are securely and independently processed at the same time without interference. This is crucial for maintaining accuracy when transactions are executing simultaneously. - **Durability** guarantees that once a transaction has been successfully completed, it will remain committed in the database even in the case of a system failure. This means that any changes made are permanent once the transaction is committed. Understanding these principles is essential for anyone working with database systems, as they are foundational to maintaining data integrity and reliability in transaction processing. The other choices do not accurately reflect these core principles, specifically substituting consistency or including elements that do not belong to the ACID framework, leading to confusion about the

The acronym ACID in the context of database transactions stands for Atomicity, Consistency, Isolation, and Durability. Each component plays a vital role in ensuring reliable transaction processing within a database system:

• Atomicity ensures that all parts of a transaction are completed successfully; if any part fails, the entire transaction is aborted, maintaining the integrity of the database.

• Consistency guarantees that a transaction will bring the database from one valid state to another, preserving all predefined rules, such as integrity constraints. This assures that only valid data is written to the database.

• Isolation ensures that transactions are securely and independently processed at the same time without interference. This is crucial for maintaining accuracy when transactions are executing simultaneously.

• Durability guarantees that once a transaction has been successfully completed, it will remain committed in the database even in the case of a system failure. This means that any changes made are permanent once the transaction is committed.

Understanding these principles is essential for anyone working with database systems, as they are foundational to maintaining data integrity and reliability in transaction processing. The other choices do not accurately reflect these core principles, specifically substituting consistency or including elements that do not belong to the ACID framework, leading to confusion about the