- A
Use DMS with a one-time migration job and schedule downtime.
Why wrong: One-time migration requires downtime; the scenario requires minimal downtime.
- B
Export the Oracle database to a dump file and import into Cloud SQL using pg_restore.
Why wrong: This method requires downtime and does not handle schema conversion automatically.
- C
Use DMS with continuous migration but skip Ora2Pg; DMS automatically converts PL/SQL to PL/pgSQL.
Why wrong: DMS does not automatically convert stored procedures; you need Ora2Pg or manual conversion.
- D
Use DMS with a continuous migration job, use Ora2Pg for schema conversion, and connect via Cloud SQL Auth Proxy.
Continuous migration with CDC achieves minimal downtime; Ora2Pg converts schema; Cloud SQL Auth Proxy connects securely.
PCD Migrate Data Solutions Practice Question
This PCD practice question tests your understanding of migrate data solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company plans to migrate a 200 GB Oracle database to Cloud SQL for PostgreSQL with minimal downtime. The source database has complex stored procedures and triggers. Which approach should the company 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
Use DMS with a continuous migration job, use Ora2Pg for schema conversion, and connect via Cloud SQL Auth Proxy.
Database Migration Service supports continuous migration with CDC for minimal downtime. Ora2Pg is used for schema conversion including stored procedures. Cloud SQL Auth Proxy provides secure connectivity without VPC peering.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use DMS with a one-time migration job and schedule downtime.
Why it's wrong here
One-time migration requires downtime; the scenario requires minimal downtime.
- ✗
Export the Oracle database to a dump file and import into Cloud SQL using pg_restore.
Why it's wrong here
This method requires downtime and does not handle schema conversion automatically.
- ✗
Use DMS with continuous migration but skip Ora2Pg; DMS automatically converts PL/SQL to PL/pgSQL.
Why it's wrong here
DMS does not automatically convert stored procedures; you need Ora2Pg or manual conversion.
- ✓
Use DMS with a continuous migration job, use Ora2Pg for schema conversion, and connect via Cloud SQL Auth Proxy.
Why this is correct
Continuous migration with CDC achieves minimal downtime; Ora2Pg converts schema; Cloud SQL Auth Proxy connects securely.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Trap categories for this question
Scenario analysis trap
One-time migration requires downtime; the scenario requires minimal downtime.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PCD ACL questions on filtering logic and placement.
- →
Migrate Data Solutions — study guide chapter
Learn the concepts, then practise the questions
- →
Migrate Data Solutions practice questions
Targeted practice on this topic area only
- →
All PCD questions
980 questions across all exam domains
- →
Google Professional Cloud Developer study guide
Full concept coverage aligned to exam objectives
- →
PCD practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCD practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Manage a Solution that Can Span Multiple Database Systems practice questions
Practise PCD questions linked to Manage a Solution that Can Span Multiple Database Systems.
Deploy Scalable and Highly Available Databases in Google Cloud practice questions
Practise PCD questions linked to Deploy Scalable and Highly Available Databases in Google Cloud.
Design Scalable and Highly Available Cloud Database Solutions practice questions
Practise PCD questions linked to Design Scalable and Highly Available Cloud Database Solutions.
Migrate Data Solutions practice questions
Practise PCD questions linked to Migrate Data Solutions.
Designing highly scalable, available, and reliable cloud-native applications practice questions
Practise PCD questions linked to Designing highly scalable, available, and reliable cloud-native applications.
Building and testing applications practice questions
Practise PCD questions linked to Building and testing applications.
Deploying applications practice questions
Practise PCD questions linked to Deploying applications.
Integrating Google Cloud services practice questions
Practise PCD questions linked to Integrating Google Cloud services.
Managing application performance monitoring practice questions
Practise PCD questions linked to Managing application performance monitoring.
PCD fundamentals practice questions
Practise PCD questions linked to PCD fundamentals.
PCD scenario practice questions
Practise PCD questions linked to PCD scenario.
PCD troubleshooting practice questions
Practise PCD questions linked to PCD troubleshooting.
Practice this exam
Start a free PCD practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PCD question test?
Migrate Data Solutions — This question tests Migrate Data Solutions — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use DMS with a continuous migration job, use Ora2Pg for schema conversion, and connect via Cloud SQL Auth Proxy. — Database Migration Service supports continuous migration with CDC for minimal downtime. Ora2Pg is used for schema conversion including stored procedures. Cloud SQL Auth Proxy provides secure connectivity without VPC peering.
What should I do if I get this PCD question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PCD ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This PCD 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 PCD exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.