Snowflake COF-C02 Practice Test - Questions Answers, Page 9

Snowflake manages various compute resources and features, including Snowpipe and the ability to scale up a warehouse. Snowpipe is Snowflake's continuous data ingestion service that allows users to load data as soon as it becomes available. Scaling up a warehouse refers to increasing the compute resources allocated to a virtual warehouse to handle larger workloads or improve performance.

References:

[COF-C02] SnowPro Core Certification Exam Study Guide

Snowflake Documentation on Snowpipe and Virtual Warehouses1

When a virtual warehouse in Snowflake is resized, specifically when it is increased in size, the additional compute resources become immediately available to all running and queued queries. This means that the performance of these queries can improve due to the increased resources.Conversely, when the size of a warehouse is reduced, the compute resources are not removed until they are no longer being used by any current operations1.

References:

[COF-C02] SnowPro Core Certification Exam Study Guide

Snowflake Documentation on Virtual Warehouses2

The COPY command in Snowflake allows for the reordering of columns as they are loaded into a table, and it also permits the omission of columns from the source file during the load process. This provides flexibility in handling the schema of the data being ingested. References: [COF-C02] SnowPro Core Certification Exam Study Guide

Clustering keys in Snowflake are used to reorganize large tables based on one or more columns. This feature optimizes the arrangement of data within micro-partitions to improve query performance, especially for large tables where efficient data retrieval is crucial. References: [COF-C02] SnowPro Core Certification Exam Study Guide

https://docs.snowflake.com/en/user-guide/tables-clustering-keys.html

The correct command to view all roles granted to a specific user in Snowflake isSHOW GRANTS TO USER <user_name>;. This command lists all access control privileges that have been explicitly granted to the specified user. References:SHOW GRANTS | Snowflake Documentation

Snowpipe is used for continuous, automated data loading into Snowflake. It uses aCOPY INTO <table>statement within a pipe object to load data from files as soon as they are available in a stage. Snowpipe does not execute UDFs, stored procedures, or insert statements. References:Snowpipe | Snowflake Documentation

The ACCOUNTADMIN role is required for a user to create and manage accounts in Snowflake.This role has the highest level of privileges and is responsible for managing all aspects of the Snowflake account, including the ability to create and manage other user accounts1.

https://docs.snowflake.com/en/user-guide/security-access-control-considerations.html

When unloading data to a stage, it is recommended to define an individual file format.This ensures that the data is unloaded in a consistent and expected format, which can be crucial for downstream processing and analysis2

The result set cache in Snowflake is invalidated and no longer available when the underlying data of the query results has changed, ensuring that queries return the most current data.Additionally, the cache expires after 24 hours to maintain the efficiency and accuracy of data retrieval1.