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Concept for the planned transfer of schema and data between database systems or versions, including validation and cutover strategies.
Database migration is the process of transferring data and schema between database systems or versions. It covers schema evolution, data transformation, validation, and cutover strategies. The concept addresses compatibility, downtime minimization, and operational coordination across teams and environments. It informs planning, tooling, and rollback options.
Measured time the application is unavailable.
Count or share of records with inconsistencies after migration.
Volume of data migrated per time unit successfully.
Company moved OLTP database to a managed service, reduced operational overhead and used replication for minimal outage.
Conversion of procedures and data formats, use of transformation layers and extensive testing to ensure functionality.
Phased rollout using feature flags and replication, with automated consistency checks during migration.
Inventory and dependency analysis
Design target schema and transformation mapping
Set up test and replication environments
Implement automated tests and validations
Perform dry runs and performance tests
Production cutover and monitoring