Which of the following ACID property states that the system must go from one known state to another and that the system integrity must be maintained?

Solution(By Examveda Team)

In the context of database management and the ACID properties, the property that states that the system must go from one known state to another and that the system integrity must be maintained is Option B: consistency. Let's explore the explanation:

Option A: atomicity refers to the property that ensures that all operations within a transaction are treated as a single unit, either all of them succeed or none of them are applied. It doesn't specifically address maintaining system integrity between states.

Option C: isolation refers to the property that ensures that the execution of transactions is isolated from the effects of concurrently executing transactions. It doesn't specifically address the requirement of moving from one known state to another with maintained integrity.

Option D: durability refers to the property that guarantees that once a transaction is committed, its effects are permanent, even in the presence of system failures. It doesn't directly address the transition between known states.

Option B: consistency is the correct answer. The consistency property ensures that a transaction takes the database from one valid state to another, maintaining the overall integrity of the system. This means that the database must satisfy certain integrity constraints before and after the transaction, ensuring data accuracy and reliability throughout the transition.

Therefore, the correct answer is Option B: consistency, as it accurately represents the ACID property that enforces the requirement of moving from one known state to another while maintaining system integrity.