- A
gcloud sql import
Why wrong: This command imports data, not schema assessment.
- B
Database Migration Service (DMS)
Why wrong: DMS performs continuous migration but does not provide detailed schema compatibility assessment.
- C
Cloud Dataflow
Why wrong: Dataflow is for data processing, not schema migration analysis.
- D
Ora2Pg
Ora2Pg is the standard tool for assessing and converting Oracle schemas to PostgreSQL.
Question 910 of 980
PCD Practice Question: Manage a Solution that Can Span Multiple Database Systems
This PCD practice question tests your understanding of manage a solution that can span multiple database systems. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 is migrating an on-premises Oracle database to Cloud SQL for PostgreSQL. They need to assess the compatibility of the existing schema and identify objects that need conversion. Which tool 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
✓
Ora2Pg
Ora2Pg is an open-source tool designed to migrate Oracle schemas to PostgreSQL. It assesses compatibility, converts DDL, and reports unsupported features. DMS handles the data migration but doesn't provide schema analysis. Dataflow is for data transformation, not schema assessment.
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.
- ✗
gcloud sql import
Why it's wrong here
This command imports data, not schema assessment.
- ✗
Database Migration Service (DMS)
Why it's wrong here
DMS performs continuous migration but does not provide detailed schema compatibility assessment.
- ✗
Cloud Dataflow
Why it's wrong here
Dataflow is for data processing, not schema migration analysis.
- ✓
Ora2Pg
Why this is correct
Ora2Pg is the standard tool for assessing and converting Oracle schemas to PostgreSQL.
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
Command / output trap
This command imports data, not schema assessment.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
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Manage a Solution that Can Span Multiple Database Systems — study guide chapter
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FAQ
Questions learners often ask
What does this PCD question test?
Manage a Solution that Can Span Multiple Database Systems — This question tests Manage a Solution that Can Span Multiple Database Systems — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Ora2Pg — Ora2Pg is an open-source tool designed to migrate Oracle schemas to PostgreSQL. It assesses compatibility, converts DDL, and reports unsupported features. DMS handles the data migration but doesn't provide schema analysis. Dataflow is for data transformation, not schema assessment.
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.
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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.
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