Top 50 data migration Interview Questions
The most frequently asked data migration questions across all roles and companies, ranked by real interview frequency. Updated daily.
Explain how to preserve data integrity during a large database migration using reconciliation queries, joins, CTEs, and transaction controls.
DoorDashBBank of ChinaCCybage SoftwareExplain how to use PostgreSQL validation and reconciliation queries to preserve data integrity during migration.
Veeva SystemsEvaluates your approach to SQL migration tasks and complex string transformations.
Capgemini Government SolutionsDetect missing fields, duplicate transaction keys, invalid amounts, and merchant reference issues with PostgreSQL CTEs and joins.
Sigmoid
Cox AutomotiveFind duplicate American Institutes for Research assessment submissions using a CTE, GROUP BY, HAVING, and joins.
American Institutes for Research
Publix Super Markets
Macy'sIdentify and delete duplicate payment transactions while retaining the row with the smallest payment ID.
Tests ownership during a troubled data migration, especially around diagnosis, stakeholder communication, and restoring data accuracy.
Kumaran Systems
Arch Capital
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Approach for migrating data between databases with validation, idempotent loads, and schema change handling.
EPAM Systems
Capital Fund Management
NextdoorChoose Azure resources for securely migrating batch, database, and streaming data to cloud storage and analytics services.
MicrosoftTests your migration strategy, risk management, and ability to preserve data correctness and performance.
Indicium AI
Alten Calsoft LabsDesign a low-latency pipeline to ingest and migrate petabytes of on-premises data to Azure.
Microsoft