In what scenario would a database migration commonly occur?

A database migration commonly occurs when transferring data to a new software application. This process involves moving data from one database to another or from one system to a different application that may have a different structure, format, or technology. Migration is essential when organizations opt for new software solutions that better meet their evolving requirements, ensuring they can leverage existing data while integrating it into a new environment successfully.

In such scenarios, the migration process will typically encompass data extraction, transformation, and loading (ETL), ensuring data integrity and compatibility with the new application. This is a crucial step in minimizing disruption and ensuring a seamless transition as businesses change their operational tools.

The other scenarios, while related to database management, do not represent typical migration activities. Upgrading a database server may entail changes to the system's architecture or performance optimizations but does not necessarily involve moving data to a different application. Regular performance adjustments focus on tuning and optimizing database performance rather than transferring data. Similarly, creating visual data reports is more about analyzing and presenting data rather than moving it, which does not fit the migration definition.