The correct actions are designing the schema using a star schema with fact and dimension tables, using the AWS Schema Conversion Tool (SCT) to convert stored procedures, and denormalizing the schema for Redshift’s columnar architecture. Redshift is optimized for star schemas because its columnar storage and sort keys accelerate aggregations on fact tables, while the SCT automates the conversion of Oracle’s PL/SQL procedural logic into Redshift’s SQL dialect. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding that Redshift rejects Oracle-specific features like indexes and triggers, which are common traps—candidates often mistakenly try to replicate them. Remember the mnemonic “No Index, No Trigger, Star Schema is Bigger” to avoid those wrong options and focus on denormalization, SCT conversion, and star schema design.
DBS-C01 Workload-Specific Database Design Practice Question
This DBS-C01 practice question tests your understanding of workload-specific database design. 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 is migrating a large Oracle data warehouse to Amazon Redshift. The source database has many complex stored procedures, views, and joins. Which THREE actions should the company take during the migration?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the AWS Schema Conversion Tool (SCT) to convert stored procedures.
Option A is correct because Redshift is columnar and may require denormalization. Option B is correct because the AWS Schema Conversion Tool (SCT) can convert Oracle stored procedures to Redshift SQL. Option D is correct because Redshift is optimized for star schema (fact and dimension tables). Option C is wrong because Redshift does not support indexes like Oracle. Option E is wrong because Redshift does not support triggers.
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.
✗
Migrate triggers as they are in Redshift.
Why it's wrong here
Redshift does not support triggers.
✓
Use the AWS Schema Conversion Tool (SCT) to convert stored procedures.
Why this is correct
SCT converts database schema and code.
Related concept
Standard ACLs match source addresses.
✗
Recreate all indexes from Oracle in Redshift.
Why it's wrong here
Redshift uses sort keys, not indexes.
✓
Denormalize the schema to reduce the number of joins.
Why this is correct
Redshift performs better with denormalized data.
Related concept
Standard ACLs match source addresses.
✓
Design the schema using a star schema with fact and dimension tables.
Why this is correct
Redshift is optimized for star schema.
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.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. 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. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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 DBS-C01 ACL questions on filtering logic and placement.
Workload-Specific Database Design — This question tests Workload-Specific Database Design — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use the AWS Schema Conversion Tool (SCT) to convert stored procedures. — Option A is correct because Redshift is columnar and may require denormalization. Option B is correct because the AWS Schema Conversion Tool (SCT) can convert Oracle stored procedures to Redshift SQL. Option D is correct because Redshift is optimized for star schema (fact and dimension tables). Option C is wrong because Redshift does not support indexes like Oracle. Option E is wrong because Redshift does not support triggers.
What should I do if I get this DBS-C01 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 DBS-C01 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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