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| Section | Weight | Objectives |
|---|---|---|
| Data Loading, Unloading & Connectivity | 18% | - Stages, File Formats, COPY INTO, Snowpipe - Unloading Data, Export Options - Bulk Load, Streaming, Dynamic Tables - External Integrations, Connectors, SnowSQL |
| Snowflake Architecture & Core Concepts | 31% | - Virtual Warehouses, Clustering, Caching - Cloud Services Layer, Compute Layer, Storage Layer - Snowsight Interface, Core Platform Features - Databases, Schemas, Objects, Data Types |
| Performance Optimization, Querying & Transformation | 21% | - Cortex AI, Notebooks, Apache Iceberg Tables - Materialized Views, Streams, Tasks, Pipelines - SQL Transformations, Semi-structured/Unstructured Data - Query Processing, Profiling, Optimization |
| Account Management & Data Governance | 20% | - Governance: Resource Monitors, Data Masking, Row/Column Security - Security: Network Policies, MFA, Encryption - Trust Center, Data Lineage, Compliance - Access Control: RBAC, DAC, Roles, Privileges |
| Data Collaboration & Protection | 10% | - Secure Data Sharing, Listings, Marketplace - Data Clean Rooms, Collaboration Features - Data Protection, Retention, Time Travel, Fail-safe |
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질문 # 850
Which file function provides a URL with access to a file on a stage without the need for authentication and authorization?
정답：A
설명：
TheGET_PRESIGNED_URLfile function in Snowflake provides a URL with access to a file on a stage without requiring authentication and authorization. This is particularly useful for sharing data files stored in Snowflake stages with external parties securely and conveniently. The presigned URL generated by this function gives temporary access to the file, which expires after a specified duration.
Example usage ofGET_PRESIGNED_URL:
SELECTGET_PRESIGNED_URL( ' < stage_name > ' , ' < file_path > ' );
This function generates a URL that can be used to directly access a file in the stage, making it easier to share data without compromising security.
Reference: Snowflake Documentation on File and Table Functions, specifically the section on GET_PRESIGNED_URL: https://docs.snowflake.com/en/sql-reference/functions/get_presigned_url.html Top of Form
질문 # 851
A table gets updated throughout the day. A user wants to automate the process of table changes by capturing only the changed rows every 20 minutes and applying transformations without manual intervention. How can this be accomplished?
정답：A
설명：
The correct answer is C. Create a stream and schedule a task every 20 minutes.
A stream is used to capture change data capture, or CDC, information for a table. It records inserts, updates, and deletes made to the source table. A task is used to automate SQL execution on a schedule. Together, streams and tasks are commonly used to automate incremental data processing in Snowflake.
Why C is correct:
The requirement has two parts:
Capture only changed rows.
Run the transformation automatically every 20 minutes.
A stream satisfies the first requirement because it tracks changed rows. A scheduled task satisfies the second requirement because it can run SQL logic at a defined interval, such as every 20 minutes.
Example concept:
CREATE STREAM my_stream
ON TABLE source_table;
CREATE TASK my_task
WAREHOUSE = my_warehouse
SCHEDULE = ' 20 MINUTE '
AS
INSERT INTO target_table
SELECT ...
FROM my_stream;
Why the other options are incorrect:
A). This is partially correct, but it does not clearly satisfy the requirement to run every 20 minutes. A task can include a WHEN SYSTEM$STREAM_HAS_DATA(...) condition, but the question specifically asks for processing every 20 minutes.
B). A task alone can run every 20 minutes, but it does not capture only changed rows.
D). Dynamic tables are used for declarative automated data transformation, but the question specifically asks to capture only changed rows from a frequently updated table, which is the purpose of a stream.
Official Snowflake documentation reference:
Snowflake documentation describes streams as objects that record data manipulation language, or DML, changes made to tables. Snowflake tasks execute SQL statements on a schedule or as part of a task graph.
Reference: Snowflake Documentation - Streams; Snowflake Documentation - Introduction to tasks; SnowPro Core Study Guide - SQL and Snowflake Objects.
질문 # 852
Which function is used to unload a relational table into a JSON file*?
정답：D
설명：
The TO_JSON function in Snowflake is used to convert a relational table or individual rows into JSON format. This function is helpful for exporting data in JSON format.
Using TO_JSON Function:
SELECT TO_JSON(OBJECT_CONSTRUCT(*))
FROM my_table;
Exporting Data: The TO_JSON function converts the table rows into JSON format, which can then be exported to a file.
References:
Snowflake Documentation: TO_JSON Function
Snowflake Documentation: Exporting Data
질문 # 853
How does Snowflake reorganize data when it is loaded? (Select TWO).
정답：C,E
설명：
When data is loaded into Snowflake, it undergoes a reorganization process where the data is stored in a columnar format and compressed. The columnar storage format enables efficient querying and data retrieval, as it allows for reading only the necessary columns for a query, thereby reducing IO operations. Additionally, Snowflake uses advanced compression techniques to minimize storage costs and improve performance. This combination of columnar storage and compression is key to Snowflake's data warehousing capabilities.
References:
Snowflake Documentation: Data Storage and Organization
질문 # 854
Which Snowflake layer is always leveraged when accessing a query from the result cache?
정답：C
설명：
The Cloud Services layer in Snowflake is responsible for managing the result cache.When a query is executed, the results are stored in this cache, and subsequent identical queries can leverage these cached results without re-executing the entire query1.
질문 # 855
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