Question

A database program should be written in a way that guarantees that, if the database is in a consistent state before executing the transaction, it will be in a consistent state after the complete execution of the transaction, assuming that ____ with other transactions occurs?

1) no conflict
2) conflict
3) partial conflict
4) complete conflict

Answer 1

To ensure database consistency after a transaction, a database program should guard against conflicts with other transactions, aiming for no conflict during its execution.

Step-by-step explanation:

A database program should be written in a way that guarantees consistency, meaning that if the database is in a consistent state before executing the transaction, it should also be in a consistent state after the transaction is completely executed. This property is known as atomicity, which is one of the ACID properties (Atomicity, Consistency, Isolation, Durability) that databases are designed to maintain to ensure transaction reliability. For the database to maintain consistency after a transaction, the correct answer is 1) no conflict with other transactions. Transactions should be isolated from each other to prevent conflicts that can lead to inconsistencies.