When migrating to Amazon RDS or Amazon Aurora, what does DMS help handle?

When migrating to Amazon RDS or Amazon Aurora, AWS Database Migration Service (DMS) plays a crucial role in facilitating the migration of data efficiently and effectively. The primary function of DMS is to handle data replication, which allows users to move data from various database sources to RDS or Aurora seamlessly. This includes maintaining data integrity during the migration process to ensure that applications continue to run without disruption.

Additionally, DMS assists with schema conversion in certain scenarios, enabling users to adapt their database schema from the source database to the target database format required by RDS or Aurora. This functionality is particularly beneficial when migrating from one database engine to another that may have different schema requirements, as it simplifies the transition and minimizes manual effort.

The other options do not align with the primary purpose of DMS. Custom query languages for databases do not specifically relate to DMS, as it is focused on migration rather than altering or supporting different querying methodologies. The creation of new AWS accounts and on-premises hardware upgrades are outside the scope of DMS's functionalities; these activities are unrelated to the direct tasks of data migration and replication that DMS is designed to handle. Thus, the correct answer accurately reflects DMS's capabilities in supporting database migrations to Amazon RDS or