Question

Hence, we reduce the problem of checking the whole schedule to checking only a ____ of the schedule (i.e. operations from only the committed transactions.)

Answer 1

The concept pertains to database management, specifically transaction scheduling, where the focus is on operations from committed transactions to maintain data integrity. Only a subset of the schedule needs to be checked to ensure consistency.

Step-by-step explanation:

The student is asking about a concept related to database management, specifically in the context of transaction scheduling and commit operations. To answer your question, we can reduce the problem of checking the whole schedule to checking only a subset of the schedule, which includes operations from only the committed transactions.

In database systems, it's important to ensure the consistency and integrity of data. One way this is achieved is through the use of transactions, which are sequences of operations performed as a single logical unit of work. A transaction must be completely executed (committed) or not executed at all (rolled back) to maintain the database's correctness. This concept is known as atomicity. By examining only the committed transactions, which have been completed successfully and have had their effects recorded permanently, the consistency of the schedule can be ascertained without having to check each operation in every transaction.