Snowflake COF-C02 Practice Test - Questions Answers, Page 38

Snowflake supports the storage of semi-structured data using theARRAYandVARIANTdata types. TheARRAYdata type can directly containVARIANT, and thus indirectly contain any other data type, including itself.TheVARIANTdata type can store a value of any other type, includingOBJECTandARRAY, and is often used to represent semi-structured data formats like JSON, Avro, ORC, Parquet, or XML34.

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APre-signed URLshould be used to access files stored in a Snowflake stage without requiring authentication into Snowflake. Pre-signed URLs are simple HTTPS URLs that provide temporary access to a file via a web browser, using a pre-signed access token.The expiration time for the access token is configurable, and this type of URL allows users or applications to directly access or download the files without needing to authenticate into Snowflake5.

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The Notify & Suspend action for a resource monitor in Snowflake sends a notification to all account administrators who have notifications enabled and suspends all assigned warehouses.However, the suspension only occurs after all currently running statements in the warehouses have been completed1.References:[COF-C02] SnowPro Core Certification Exam Study Guide

The query acceleration service in Snowflake is designed to benefit queries that involve large scans and selective filters.This service can offload portions of the query processing work to shared compute resources, which can handle these types of workloads more efficiently by performing more work in parallel and reducing the wall-clock time spent in scanning and filtering2.References:[COF-C02] SnowPro Core Certification Exam Study Guide

Snowflake's Data Exchange feature provides a data hub for secure data collaboration.It allows providers to publish data that can be discovered and accessed by a selected group of invited members, facilitating secure and controlled data sharing within a collaborative environment3.References:[COF-C02] SnowPro Core Certification Exam Study Guide

One of the characteristics of materialized views in Snowflake is that they allow multiple tables to be joined in the underlying query.This enables the pre-computation of complex queries involving joins, which can significantly improve the performance of subsequent queries that access the materialized view4.References:[COF-C02] SnowPro Core Certification Exam Study Guide

To start configuring Snowflake for Single Sign-On (SSO), theCREATE SECURITY INTEGRATIONcommand is used.This command sets up a security integration object in Snowflake, which is necessary for enabling SSO with external identity providers using SAML 2.01.

References:[COF-C02] SnowPro Core Certification Exam Study Guide

When theDROP MANAGED ACCOUNTcommand is executed in Snowflake, it removes the managed account, including all objects created within the account, and access to the account is immediately restricted2.

References:[COF-C02] SnowPro Core Certification Exam Study Guide

Snowflake external tables are read-only, which means data manipulation language (DML) operations like INSERT, RENAME, or ALTER cannot be performed on them.However, external tables can be used for query and join operations3.

References:[COF-C02] SnowPro Core Certification Exam Study Guide