What feature of SQL Developer's data-loading wizard ensures that only successful data loads are finalized?

The feature of SQL Developer's data-loading wizard that ensures only successful data loads are finalized involves creating a temporary table. This process allows the data to be initially loaded into an intermediate table where all the data integrity checks and validations can take place without affecting the final destination table. Only if the complete loading process meets the predefined success criteria does the data in the temporary table get moved to the final table.

This approach is beneficial because it prevents partial or erroneous records from contaminating the primary dataset. If there are any issues during the loading process, such as data format mismatches or constraint violations, the temporary table can be discarded without impacting the original data. Once all data loads successfully, the move to the primary table can be finalized with confidence, ensuring data integrity and reliability.

The other options may refer to different aspects of the data loading process, such as testing samples or verifying data types, but they do not specifically encapsulate the core mechanistic feature that ensures successful completion of data loads prior to finalization.