Question

The premise behind view equivalence entails that As long as each read operation of a transaction reads the result of the same write operation in both schedules, the write operations of each transaction must produce the ____.

Answer 1

View equivalence in databases ensures that all read operations in a transaction see the result of the same write operation across schedules, leading to the same final outcome in each schedule for consistency.

Step-by-step explanation:

The concept of view equivalence in database systems refers to the idea that two schedules (sequences of transactions) are view equivalent if they are indistinguishable from the perspective of any external observer. This means that for any read operation in a transaction of one schedule, it sees the result of the same last write operation as it does in the other schedule. Thus, in view equivalent schedules, the write operations of each transaction must produce the same final outcome in both schedules. In other words, the state of the database after both schedules have executed must be the same, ensuring data consistency and integrity.