Which SQL command cancels the proposed changes in a pending transaction and marks the end of the transaction?

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Multiple Choice

Which SQL command cancels the proposed changes in a pending transaction and marks the end of the transaction?

Explanation:
Rollback is the command that cancels the proposed changes in the current transaction and ends it. In SQL, a transaction groups several operations so they’re treated as a single unit. You can either commit to make all those changes permanent, or rollback to discard them. Rollback undoes every data-modifying action performed since the transaction began, leaving the database as it was before the transaction started. For example, you might start a transaction, adjust balances in two accounts, and then issue a rollback to ensure neither change takes effect. Commit, by contrast, would apply the changes. Terms like Cancel or Abort aren’t standard SQL commands, so they don’t perform the rollback in typical SQL environments.

Rollback is the command that cancels the proposed changes in the current transaction and ends it. In SQL, a transaction groups several operations so they’re treated as a single unit. You can either commit to make all those changes permanent, or rollback to discard them. Rollback undoes every data-modifying action performed since the transaction began, leaving the database as it was before the transaction started. For example, you might start a transaction, adjust balances in two accounts, and then issue a rollback to ensure neither change takes effect. Commit, by contrast, would apply the changes. Terms like Cancel or Abort aren’t standard SQL commands, so they don’t perform the rollback in typical SQL environments.

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