Google PCA Practice Question: Analysing and Optimising Technical and Business Processes
A company is migrating a large Oracle database (5 TB) from on-premises to Cloud SQL for PostgreSQL. They require minimal downtime and automated schema conversion. Which Google Cloud service should they use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Database Migration Service (DMS)
Database Migration Service (DMS) supports homogeneous and heterogeneous migrations with minimal downtime and includes schema conversion for Oracle to PostgreSQL via the Database Migration Service with converters. Velostrata is for VM migration, Transfer Appliance for bulk data, and Storage Transfer Service for cloud-to-cloud data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Velostrata (Migrate for Compute Engine)
Why it's wrong here
Velostrata migrates VMs, not databases.
- ✗
Transfer Appliance
Why it's wrong here
Transfer Appliance is for physical data transfer, not live database migration.
- ✓
Database Migration Service (DMS)
Why this is correct
DMS supports Oracle to Cloud SQL for PostgreSQL migration with minimal downtime and automated schema conversion.
- ✗
Storage Transfer Service
Why it's wrong here
Storage Transfer Service is for cloud-to-cloud data transfer, not database migration.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Service
A service is a software component or system that performs a specific function and is available to be used by other programs or users over a network.
Key term
Cloud SQL
Cloud SQL is a fully managed relational database service that lets you set up, maintain, and scale SQL databases (like MySQL, PostgreSQL, and SQL Server) in the cloud without managing the underlying infrastructure.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.