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| Section | Objectives |
|---|---|
| Data Transformations and Querying | - Semi-structured data handling (VARIANT, JSON, Parquet) - SQL querying in Snowflake |
| Snowflake Architecture and Overview | - Virtual warehouses and resource scaling concepts - Snowflake architecture concepts (cloud data platform, separation of storage and compute) |
| Data Loading and Unloading | - Bulk loading using stages and COPY INTO - Data unloading and external stages |
| Data Protection, Security, and Performance | - Query performance optimization basics - Time Travel and Fail-safe concepts - Role-based access control (RBAC) |
>> COF-C02 Latest Practice Questions <<
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NEW QUESTION # 385
What is a fundamental characteristic of Snowflake micro-partitions?
Answer: B
Explanation:
* Micro-partitions are immutable units of storage in Snowflake that underpin its architecture.
* Once created, they cannot be changed; instead, new micro-partitions are created when updates occur.
* This immutability ensures efficient storage, querying, and performance optimization.
References:
* Snowflake Documentation: Micro-partitioning
* Snowflake Architecture Overview
NEW QUESTION # 386
What type of account can be used to share data with a consumer who does have a Snowflake account?
Answer: C
Explanation:
A Reader account in Snowflake can be used to share data with a consumer who does not have a Snowflake account. Reader accounts are a type of shared account provided by data providers to external data consumers, allowing them to access and query shared data using Snowflake's web interface without needing their own Snowflake account.
Reference:
Snowflake Documentation: Reader Accounts
NEW QUESTION # 387
How can a user change which columns are referenced in a view?
Answer: D
Explanation:
In Snowflake, to change the columns referenced in a view, the view must be recreated with the required changes. The ALTER VIEW command does not allow changing the definition of a view; it can only be used to rename a view, convert it to or from a secure view, or add, overwrite, or remove a comment for a view. Therefore, the correct approach is to drop the existing view and create a new one with the desired column references.
NEW QUESTION # 388
What action should be taken if a Snowflake user wants to share a newly created object in a database with consumers?
Answer: B
Explanation:
When a Snowflake user wants to share a newly created object in a database with consumers, the correct action to take is to use the GRANT privilege ... TO SHARE command to grant the necessary privileges for the object to be shared. This approach allows the object owner or a user with the appropriate privileges to share database objects such as tables, secure views, and streams with other Snowflake accounts by granting access to a named share.
The GRANT statement specifies which privileges are granted on the object to the share. The object remains in its original location; sharing does not duplicate or move the object. Instead, it allows the specified share to access the object according to the granted privileges.
For example, to share a table, the command would be:
GRANT SELECT ON TABLE new_table TO SHARE consumer_share;
This command grants the SELECT privilege on a table named new_table to a share named consumer_share, enabling the consumers of the share to query the table.
Automatic sharing, dropping and re-adding the object, or recreating the object with a different name are not required or recommended practices for sharing objects in Snowflake. The use of the GRANT statement to a share is the direct and intended method for this purpose.
NEW QUESTION # 389
Where can a user find and review the failed logins of a specific user for the past 30 days?
Answer: A
NEW QUESTION # 390
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