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Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are managing a Snowflake Native Application that allows consumers to configure certain aspects of its behavior through a dedicated configuration table. The application logic relies on specific values within this table to function correctly. During a new version deployment, you need to ensure that existing consumer configurations are migrated to the new version's configuration table structure without disrupting the application's availability. Which of the following strategies would you use to perform a zero-downtime configuration migration?

A) Perform an in-place alteration of the existing configuration table to match the new schema. This might involve adding, dropping, or renaming columns. Update the application code to reflect these changes. If you need to rename tables, then use SALTER TABLE ... RENAME to minimize downtime.
B) Rename the existing configuration table to a backup name. Create a new configuration table with the new schema. The application will start using the new empty table, and consumers can manually reconfigure their settings.
C) Implement a parallel migration strategy. Create a new configuration table with the new schema alongside the existing one. Update the application code to read from both tables concurrently, prioritizing the new table if values are present. Schedule a background job to migrate data from the old table to the new table. Once the migration is complete and verified, switch the application to solely read from the new table and eventually drop the old one.
D) Drop the existing configuration table and recreate it with the new schema during the application upgrade process. The application will automatically adapt to the new schema once the upgrade is complete.
E) Deploy the new application version with a feature flag that disables the configuration table dependency. Run a script in the background to migrate the data to the new table and then flip the feature flag to enable the new configuration.

2. A Native Application provider wants to grant the 'SELECT privilege on a view, 'CUSTOMER DATA, in a shared database 'SALES DATA DB' to consumers installing their application. The provider also wants to ensure that future views created in 'SALES DATA DB' are automatically accessible to the application. Which of the following SQL statements, executed by the provider, achieves this with the LEAST amount of privilege escalation risk?

A)

B)

C)

D)

E)

3. You are designing a Snowflake Native Application that requires managing application roles and permissions. Which of the following best practices should be followed regarding application roles and permissions in a Snowflake Native Application?

A) Use the 'EXECUTE AS OWNER clause for all stored procedures to avoid granting explicit privileges to the application roles.
B) Avoid using application roles altogether and rely solely on the consumer's existing roles and permissions.
C) Bundle all application logic within a single stored procedure owned by the 'APPLICATION' role.
D) Grant all necessary privileges to the 'APPLICATION' role during setup, as this simplifies permission management for consumers.
E) Define granular application roles with specific permissions, and provide documentation to the consumer on how to grant these roles to their users.

4. You are developing a Snowflake Native Application that provides data transformation services. You want to provide example SQL scripts to consumers within the application package to showcase how to use the application's functions. Where should these example scripts be stored to ensure they are accessible to consumers upon installation?

A) Embed the example SQL scripts directly as string literals within the setup script.
B) Store the example SQL scripts in a table within the application database and provide a view to access them.
C) Store the example SQL scripts in an external stage (e.g., AWS S3) and provide instructions to the consumer to load them.
D) Store the example SQL scripts as files within the application package itself (e.g., in a 'scripts' directory) and use relative paths to access them from within the application code.
E) Store the example SQL scripts in a separate stage within the provider account and grant USAGE on the stage to the application role.

5. You've installed a Snowflake Native Application that provides advanced data analytics. The application requires a consumer-defined function (UDF), 'MASK SENSITIVE DATA, to be created in their account and used by the application. The application's setup script includes logic to check for the UDF's existence, but you want to ensure the application gracefully handles the case where the consumer has not yet created the UDF. Which of the following strategies can you implement to improve the application's resilience and provide a better user experience in this scenario? Select all that apply.

A) In the application's setup script, create a placeholder UDF with the same name and signature as 'MASK SENSITIVE DATA' that returns 'NULL'. The application logic can then handle 'NULL' values appropriately until the consumer provides the actual UDF.
B) Within the application's SQL code, use the 'TRY FUNCTION' function to call 'MASK SENSITIVE DATA'. If the UDF does not exist, 'TRY FUNCTION' will return 'NULL' instead of raising an error.
C) Dynamically generate the application code using a stored procedure, only including the parts of the code that rely on if the function exists. Use 'SYSTEM$GET PRIVILEGES()' to check existence.
D) Require the consumer to create the UDF before installing the application. The application setup script should fail if the UDF is not found, preventing installation.
E) Implement error handling within the application's code to catch the 'SQL compilation error: UDF does not exists exception. Provide a user-friendly error message and instructions on how to create the UDF.

Solutions: