The answer is PolyBase with T-SQL commands and CTAS (CREATE TABLE AS SELECT) from external tables. These two methods are correct because they both leverage the massively parallel processing (MPP) architecture of a dedicated SQL pool to ingest data directly from external storage like Azure Data Lake Storage or Blob Storage, enabling efficient batch and near-real-time data ingestion without moving data through intermediate services. On the DP-203 exam, this question tests your understanding of how to optimize data loading for Synapse dedicated SQL pools, often appearing as a trap where candidates mistakenly select COPY INTO or Azure Data Factory—but remember, COPY INTO is for serverless SQL pools, not dedicated. A key memory tip: think of PolyBase as the "bridge" for external tables and CTAS as the "loader" that creates and populates a table in one parallelized step, both essential for high-throughput ingestion in a dedicated SQL pool.
DP-203 Develop data processing Practice Question
This DP-203 practice question tests your understanding of develop data processing. 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.
You are designing a data processing solution in Azure Synapse Analytics. The solution must use a dedicated SQL pool to support both batch and near-real-time data ingestion. Which TWO of the following methods can you use to ingest data into a dedicated SQL pool? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
CREATE TABLE AS SELECT (CTAS) from external tables.
CREATE TABLE AS SELECT (CTAS) from external tables is correct because it allows you to load data from external storage (e.g., Azure Blob Storage or Azure Data Lake Storage) into a dedicated SQL pool in a single, parallelized operation. This method leverages the MPP (Massively Parallel Processing) architecture of Synapse SQL pools to efficiently ingest large volumes of data for batch processing.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
CREATE TABLE AS SELECT (CTAS) from external tables.
Why this is correct
CTAS can load data into a dedicated SQL pool from external tables.
Related concept
Read the scenario before looking for a memorised answer.
✓
PolyBase with T-SQL commands.
Why this is correct
PolyBase is a native loading method for dedicated SQL pool.
Related concept
Read the scenario before looking for a memorised answer.
✗
COPY INTO command.
Why it's wrong here
COPY INTO is not supported in dedicated SQL pool; it is used in serverless SQL pool and Azure SQL Database.
✗
Azure Logic Apps with SQL connector.
Why it's wrong here
Logic Apps is not designed for high-volume data ingestion into dedicated SQL pool.
✗
Azure Data Factory with a copy activity using native sink.
Why it's wrong here
Azure Data Factory copy activity uses PolyBase or staging, not a native sink.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the COPY INTO command (valid only for serverless SQL pools) with PolyBase or CTAS, or mistakenly think Azure Data Factory's native sink can directly write to a dedicated SQL pool without PolyBase or staging.
Detailed technical explanation
How to think about this question
PolyBase uses T-SQL commands like CREATE EXTERNAL TABLE and INSERT...SELECT to load data from Hadoop or Azure Blob Storage, bypassing the control node and distributing data directly to compute nodes for parallel processing. CTAS from external tables similarly leverages external file formats (e.g., Parquet, ORC) and can be combined with partitioning and distribution strategies to optimize query performance. In real-world scenarios, PolyBase is preferred for incremental loads, while CTAS is ideal for full refresh or large batch loads.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-203 question in full detail.
Develop data processing — This question tests Develop data processing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: CREATE TABLE AS SELECT (CTAS) from external tables. — CREATE TABLE AS SELECT (CTAS) from external tables is correct because it allows you to load data from external storage (e.g., Azure Blob Storage or Azure Data Lake Storage) into a dedicated SQL pool in a single, parallelized operation. This method leverages the MPP (Massively Parallel Processing) architecture of Synapse SQL pools to efficiently ingest large volumes of data for batch processing.
What should I do if I get this DP-203 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 →
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.
This DP-203 practice question is part of Courseiva's free Microsoft 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 DP-203 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.