What does "data migration" refer to in the context of databases?

Data migration refers specifically to the transfer of data between different storage types, formats, or systems. This process is crucial when organizations upgrade or change their database systems, move data to the cloud, or consolidate databases. During data migration, it is essential to ensure that the data is accurately transferred without corruption or loss. This includes converting data to the correct formats and ensuring compatibility between the source and target systems.

In contrast, the creation of new database tables is more about structuring the database rather than moving existing data. Data cleaning involves refining and correcting existing data to improve quality and accuracy, which is an entirely different process from migration. Similarly, data analysis for decision-making focuses on interpreting data to derive insights rather than transferring it from one system to another. Thus, the definition of data migration is best encapsulated by the option that mentions the transfer between various storage solutions.