A financial enterprise is planning to transition its primary operational database, which currently operates on a legacy version of a popular open-source relational database management system, to a fully managed service on the cloud. The new service also utilizes the same open-source relational database management system, but with the most up-to-date version. Which migration approach should the enterprise take to ensure a smooth transition with the least downtime?
Heterogeneous migration employing a tool designed for schema and data transformation
Homogeneous transition executed purely through manual backup and restore procedures, without specialized data migration tools
Heterogeneous migration conducted through manual exportation and importation
Homogeneous migration using cloud-provided data replication services