Google Professional Cloud Database Engineer Question 94
Select 4Google Cloud PlatformYou are migrating an on-premises application to Google Cloud. The application uses a MySQL database for transactional data storage and a Redis instance for caching. During the migration assessment phase, you must evaluate the dependencies between the application and these databases to ensure a smooth transition. Which steps should you take to assess the application and database dependencies effectively?
- A
Analyze the application code to identify database connection strings and query patterns.
- B
Review database logs to determine the query load and access patterns.
- C
Migrate the database schemas to Cloud SQL before assessing dependencies.
- D
Identify transactional consistency requirements between the application and the database.
- E
Verify if the caching layer (Redis) is being used for any critical transactional data storage.
Show answer and explanation
Correct answers: A, B, D, E
Explanation
Assessing application and database dependencies involves analyzing how the application interacts with the databases, understanding query patterns, ensuring consistency requirements are met, and verifying the role of the caching layer. These steps help ensure a smooth migration to Google Cloud. Migrating schemas prematurely can lead to issues and is not part of the dependency assessment phase.
- A. Correct.
Analyzing the application code helps identify how the application interacts with the database, including connection details and query patterns. This is an essential step for dependency assessment.
- B. Correct.
Reviewing database logs provides insights into query load, frequency, and access patterns, helping you understand how the database is used by the application.
- C. Incorrect.
Migrating the database schemas before assessing dependencies is premature and could lead to issues during migration. Dependency assessment should occur before any migration tasks.
- D. Correct.
Identifying transactional consistency requirements is critical to ensure the migrated application and database behave as expected, especially for transactional workloads.
- E. Correct.
Verifying the usage of the caching layer ensures that no critical transactional data is being stored in Redis, which could impact application behavior post-migration.