Google Professional Data Engineer Question 50
Select 4Google Cloud PlatformYour organization is planning to migrate a large-scale on-premises relational database to Google Cloud. The database is currently handling high-throughput transactions with minimal downtime tolerance. Which of the following considerations are most important for designing this data migration?
- A
Choosing a migration strategy that minimizes downtime, such as using a replication-based approach.
- B
Evaluating the compatibility of the on-premises database schema and data types with the target database on Google Cloud.
- C
Using a batch migration approach to transfer all data at once to ensure efficiency.
- D
Ensuring proper security and encryption of data during transit to comply with organizational and regulatory requirements.
- E
Prioritizing the migration of non-critical data first to test and optimize the migration process.
Show answer and explanation
Correct answers: A, B, D, E
Explanation
When designing data migrations for high-throughput transactional systems, key considerations include minimizing downtime, ensuring schema compatibility, securing data during transit, and testing the migration process using non-critical data. Batch migration approaches are less suitable for such use cases due to the potential for extended downtime and data inconsistency issues. By carefully addressing these considerations, you can ensure a smooth and efficient migration process.
- A. Correct.
Minimizing downtime is crucial when migrating high-throughput transactional databases, and replication-based strategies like Database Migration Service can help achieve this.
- B. Correct.
Schema and data types compatibility is essential to ensure that the migrated database functions correctly in the target environment.
- C. Incorrect.
A batch migration approach is not suitable for high-throughput transactional systems as it can cause significant downtime and potential data inconsistencies.
- D. Correct.
Security and encryption during transit are critical to protect sensitive data and comply with regulatory requirements during migration.
- E. Correct.
Migrating non-critical data first allows testing and optimization of the migration process, reducing risks for the critical transactional data migration.