AWS Certified Solutions Architect Associate SAA-C03 Practice Question
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 conducted through manual exportation and importation
Homogeneous migration using cloud-provided data replication services
Homogeneous transition executed purely through manual backup and restore procedures, without specialized data migration tools
Heterogeneous migration employing a tool designed for schema and data transformation
The best strategy in this scenario is to perform a homogeneous migration since the enterprise is moving from one version of the same database management system to another version of the same system. Homogeneous migrations are typically more straightforward and involve less complexity because they do not require changing the database schema or data types. They can often be facilitated by cloud-provided services that simplify and automate the replication of data between the same kinds of databases. A heterogeneous migration would be more appropriate if the enterprise were changing database platforms, for example, from a relational database system to a non-relational one, which would involve more substantial adjustments to data structures and schemas.
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