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  1. Home
  2. Snowflake Certification
  3. COF-C02 Exam
  4. Snowflake.COF-C02.v2026-03-16.q834 Dumps
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Question 686

How long can a data consumer who has a pre-signed URL access data files using Snowflake?

Correct Answer: C
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Question 687

What is the default File Format used in the COPY command if one is not specified?

Correct Answer: A
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Question 688

What is the purpose of configuring the scale factor parameter when using the Query Acceleration Service?

Correct Answer: C
The scale factor parameter limits the maximum number of resources (parallel threads) that the Query Acceleration Service can use. It helps control costs by bounding resource usage during query acceleration.
Reference:
Snowflake Docs: Query Acceleration Service
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Question 689

To use the overwrite option on insert, which privilege must be granted to the role?

Correct Answer: B
To use the overwrite option on insert in Snowflake, theDELETEprivilege must be granted to the role. This is because overwriting data during an insert operation implicitly involves deleting the existing data before inserting the new data.
* Understanding the Overwrite Option:The overwrite option (INSERT OVERWRITE) allows you to replace existing data in a table with new data. This operation is particularly useful for batch-loading scenarios where the entire dataset needs to be refreshed.
* Why DELETE Privilege is Required:Since the overwrite operation involves removing existing rows in the table, the executing role must have theDELETEprivilege to carry out both the deletion of old data and the insertion of new data.
* Granting DELETE Privilege:
* To grant theDELETEprivilege to a role, an account administrator can execute the following SQL command:
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GRANTDELETEONTABLEmy_tableTOROLE my_role;
Reference:For additional details on inserting data with the overwrite option and the required privileges, consult the Snowflake documentation on data loading:
https://docs.snowflake.com/en/sql-reference/sql/insert.html
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Question 690

What happens to foreign key constraints when a table is cloned to another database?

Correct Answer: D
* When a table is cloned in Snowflake, it creates a duplicate of the table's data and metadata. However, foreign key constraints and primary key references are not retained in the cloned table.
* This behavior is because Snowflake treats constraints as informational and does not enforce them during query execution.
* As a result, the cloned table will lose all references to both foreign and primary keys.
Why Other Options Are Incorrect:
* A. All referenced tables will be cloned: Only the specific table is cloned, not its referenced tables.
* B. The cloned table will reference the primary key in the source table: References to primary keys are lost during cloning.
* C. The cloned table will lose all references to the primary key: While correct for primary keys, this does not account for foreign keys, making it incomplete.
References:
* Cloning Tables in Snowflake
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