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Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are developing a Snowflake Native App that utilizes Streamlit for its user interface. You want to control the app's behavior based on whether it's running in a development environment within your provider account or in a consumer account after installation. Which of the following methods can you use within your 'streamlit.py' to determine the current execution context (Provider vs. Consumer) reliably?

A) Read an environment variable set during the application installation process by the consumer.
B) Examine the session context function 'CURRENT ACCOUNT()' function and compare it with the provider account identifier, if matches then it is a provider. It is the best method.
C) Use which is a function specifically designed to check if the app is running in a consumer account.
D) Query the view. Presence in this view indicates a provider environment.

2. You are developing a Snowflake Native Application that interacts with a user-provided data source. The application needs to validate that the user has granted the necessary permissions on their dat a. The application package contains the following setup script:

Which of the following approaches is the MOST secure and reliable way to check for SELECT privileges within the procedure?

A) Query the 'INFORMATION SCHEMA.TABLE PRIVILEGES' view to check if 'app_role' has SELECT privilege on 'user_schema.user_table'.
B) Assume SELECT privileges are granted as part of the application installation process without explicit validation.
C) Attempt a 'SELECT COUNT( ) FROM within a "TRY...CATCH' block and infer permissions based on the error message.
D) Use function with appropriate parameters to directly check if the 'app_role' has SELECT privilege on 'user schema.user table'.
E) Use 'SHOW GRANTS TO ROLE app_role' and parse the output to see if SELECT privilege on 'user_schema.user_table' exists.

3. You are developing a subscription-based Snowflake Native Application that offers tiered pricing (Basic, Premium, Enterprise) based on resource consumption (e.g., compute hours, data storage). Consumers select their desired tier during the subscription process. Your application needs to dynamically adjust resource limits based on the selected tier. Which combination of the following actions should you take to correctly implement this?

A) Leverage Snowflake's data governance features, creating row access policies for each tier and assigning them based on the consumer's subscription status
B) Use 'ALTER WAREHOUSE commands within the application to dynamically adjust warehouse sizes based on the selected tier, after retrieving the selected tier information via the application's configuration metadata.
C) Implement role-based access control (RBAC) using different roles for each tier, granting each role appropriate privileges for data access and compute resources. Assign users to roles based on their subscription tier.
D) Store tier-specific resource limits (e.g., compute hours, data storage limits) in a configuration table within the application. Implement stored procedures that enforce these limits during runtime using custom logic.
E) Create separate resource monitors for each tier and associate the consumer's account with the appropriate resource monitor based on their selected tier during application installation.

4. You are developing a Snowflake Native Application that manages customer dat a. You need to ensure that updates to customer records are idempotent. Your application uses a stored procedure 'update_customer(customer_id INT, new_email VARCHAR)' to update customer emails. How can you modify this procedure to guarantee idempotency, assuming that customer data changes are tracked with a 'last_updated' column of type TIMESTAMP NTZ?

A) Create a separate table to store only the changes to customer emails and query this table to determine the latest email.
B) Use ' MERGE statement, comparing the new email with the existing email and updating only if they are different, while also ensuring that the update only happens if the new ' last_updated' timestamp is later than the stored one.
C) Enclose the entire stored procedure within a 'TRY...CATCH' block and retry if any exception occurs.
D) Add a 'COMMIT statement at the end of the stored procedure to ensure all changes are persisted immediately.
E) Implement optimistic locking using a version number for each customer record and checking the version before updating.

5. You are developing a Snowflake Native App that requires specific database privileges to be granted to the application role during installation. Which sections of the 'manifest.yml' file are primarily responsible for defining these required privileges, and how does Snowflake interpret and enforce them during the installation process?

A) The 'application.initial_version.parameters' section. While parameters can control behavior, they do not define or manage privileges. Privileges must be manually configured by the consumer post-installation.
B) The 'application.initial_version.privileges' section defines the privileges needed. Snowflake automatically grants these privileges to the application role defined in 'application.initial_version.role' before the setup script runs. This ensures the application has the necessary permissions to create objects and execute code within the consumer's account.
C) The 'application.initial_version.artifacts' section is used to define the privileges. Snowflake parses this section to identify required privileges and grants them dynamically to the application role whenever a function or procedure is called that requires them.
D) A combination of the 'application.initial_version.privileges' and 'setup.script' sections. 'application.initial_version.privileges' defines initial static privileges, while 'setup.script' can grant additional privileges dynamically during installation if needed. Snowflake ensures that all specified privileges are granted before the application is fully operational.
E) The 'setup.script' section defines the privileges needed. The application setup code must explicitly grant these privileges using 'GRANT statements to a specific application role. Snowflake does not automatically grant any privileges, so you have full control over permission management.

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