Cascadeless schedules are _______.AutomaticRecoverablePermanentAll of these.Review AnswerNext

To determine the correct answer for the given question about "cascadeless schedules," let's analyze the options provided.

Understanding Cascadeless Schedules

Cascadeless schedules are a specific type of database schedule that ensures transactions are executed without cascading rollbacks, meaning that if a transaction fails, it does not affect other transactions that have already been committed. This type of schedule enhances recovery mechanisms in database systems.

Analyzing the Options

1. Automatic: This does not directly relate to the definition of cascadeless schedules.
2. Recoverable: Cascadeless schedules are indeed recoverable, as they do not allow for cascading rollbacks.
3. Permanent: This term is not applicable in the context of scheduling. It may relate to transaction commits but doesn't address the characteristics of cascadeless schedules.

Conclusion

Given that cascadeless schedules are recoverable and nothing in the other options directly addresses their nature:

Final Answer

Cascadeless schedules are Recoverable.