Describe a situation where you would need to perform a phased migration for a large database and how you would approach it.
- Migrating from a legacy system to a cloud-based platform
- Moving data from on-premises servers to a hybrid cloud environment
- Transitioning from a relational database to a NoSQL solution
- Upgrading database software version while preserving existing data
Phased migration for a large database may be necessary when upgrading database software versions while preserving existing data. This approach involves breaking down the migration process into smaller, manageable phases, such as testing compatibility, migrating subsets of data, and gradually transitioning services to the new platform.
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