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Snowflake DEA-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Performance Optimization & Scalability	15%	- Optimize warehouses, clustering, partitioning, and query performance - Design scalable compute and storage solutions - Monitor and tune workloads and resource usage
Topic 2: Data Governance, Security & Sharing	10%	- Apply access control, masking, encryption, and compliance - Track lineage, audit, and maintain data integrity - Share data securely across accounts and platforms
Topic 3: Data Pipeline Orchestration & Automation	20%	- Integrate with external orchestration tools - Build, schedule, monitor, and manage workflows - Error handling, retry logic, and dependency management
Topic 4: Data Transformation & Processing	30%	- Implement data quality, validation, and schema evolution - Work with semi-structured and unstructured data - Use streams, tasks, dynamic tables for pipelines and CDC - Design and implement transformations: SQL, stored procedures, user-defined functions
Topic 5: Data Ingestion	25%	- Use COPY INTO, external tables, Snowpipe, Snowpipe Streaming - Ingest from various sources: cloud storage, on-premises, APIs, data lakes - Handle file formats, compression, encoding, and schema detection

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Snowflake SnowPro Advanced: Data Engineer Certification Exam Sample Questions (Q246-Q251):

NEW QUESTION # 246
A stream called TRANSACTIONS_STM is created on top of a transactions table in a continuous pipeline running in Snowflake. After a couple of months, the TRANSACTIONS table is renamed transactiok3_raw to comply with new naming standards What will happen to the TRANSACTIONS _STM object?

A. Reading from the traksactioks_3T>: stream will succeed for some time after the expected STALE_TIME.
B. TRANSACTIONS _STMwill be automatically renamedTRANSACTIONS _RAW_STM.
C. TRANSACTIONS _STMwill be stale and will need to be re-created
D. TRANSACTIONS _STMwill keep working as expected

Answer: C

Explanation:
Explanation
A stream is a Snowflake object that records the history of changes made to a table. A stream is associated with a specific table at the time of creation, and it cannot be altered to point to a different table later. Therefore, if the source table is renamed, the stream will become stale and will need to be re-created with the new table name. The other options are not correct because:
TRANSACTIONS _STM will not keep working as expected, as it will lose track of the changes made to the renamed table.
TRANSACTIONS _STM will not be automatically renamed TRANSACTIONS _RAW_STM, as streams do not inherit the name changes of their source tables.
Reading from the transactions_stm stream will not succeed for some time after the expected STALE_TIME, as streams do not have a STALE_TIME property.

NEW QUESTION # 247
How can the following relational data be transformed into semi-structured data using the LEAST amount of operational overhead?

A. Use the OBJECT_CONSTRUCT function to return a Snowflake object
B. Use the PAESE_JSON function to produce a variant value
C. Use the to_json function
D. Use the TO_VARIANT function to convert each of the relational columns to VARIANT.

Answer: A

Explanation:
Explanation
This option is the best way to transform relational data into semi-structured data using the least amount of operational overhead. The OBJECT_CONSTRUCT function takes a variable number of key-value pairs as arguments and returns a Snowflake object, which is a variant type that can store JSON data. The function can be used to convert each row of relational data into a JSON object with the column names as keys and the column values as values.

NEW QUESTION # 248
Tasks may optionally use table streams to provide a convenient way to continuously process new or changed data. A task can transform new or changed rows that a stream surfaces. Each time a task is scheduled to run, it can verify whether a stream contains change data for a table and either consume the change data or skip the current run if no change data exists. Which System Function can be used by Data engineer to verify whether a stream contains changed data for a table?

A. SYSTEM$STREAM_HAS_CHANGE_DATA
B. SYSTEM$STREAM_CDC_DATA
C. SYSTEM$STREAM_HAS_DATA
D. SYSTEM$STREAM_DELTA_DATA

Answer: C

Explanation:
Explanation
SYSTEM$STREAM_HAS_DATA
Indicates whether a specified stream contains change data capture (CDC) records.

NEW QUESTION # 249
A company uses an Amazon S3 bucket to integrate multiple data sources into a central data lake.
The company needs to perform multiple transformations and data cleaning processes on the data to make the data accessible to business partners.
The company needs a solution that will give multiple business partners the ability to run SQL queries on the central data lake during normal business hours.
Which solution will meet these requirements MOST cost-effectively?

A. Use an AWS Glue Flex job after normal business hours to process the previous day's data, apply all necessary transformations, and load the prepared data into an Amazon Redshift provisioned cluster.
B. Use a provisioned Amazon EMR cluster after normal business hours to process the previous day's data, apply all necessary transformations, and load the prepared data into Amazon Redshift Serverless.
C. Use an AWS Glue Flex Job after normal business hours to process the previous day's data, apply all necessary transformations. and load the prepared data into Amazon Redshift Serverless.
D. Use an AWS Lambda function after normal business hours to process the previous day's data, apply all necessary transformations, and load the prepared data into an Amazon Redshift provisioned cluster.

Answer: C

Explanation:
AWS Glue Flex Jobs provide discounted, off-hours batch ETL to transform S3 data, and Amazon Redshift Serverless offers on-demand SQL access during business hours without paying for idle clusters minimizing cost and operations.

NEW QUESTION # 250
Jackie, a Data engineer advised to his data team members about one of the Role highlighting fol-lows points:
1. Avoid Using the <?> Role for Automated Scripts
2. Avoid Using the <?> Role to Create Objects
Which System defined or Custom Role She is mentioning?

A. SECURITYADMIN
B. CUSTOM Role
C. SYSADMIN
D. ACCOUNTADMIN
E. USERADMIN

Answer: D

NEW QUESTION # 251
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