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Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. A Snowflake Native App developer is building an application package that contains multiple versions. They want to ensure that a consumer upgrading from version 1.0 to version 2.0 MUST execute a specific set of SQL scripts as part of the upgrade process to migrate existing application dat a. Which Snowflake Native App feature should they leverage to achieve this?

A) Application Role-Based Access Control (RBAC)
B) Snowflake Pipes to load and transform the existing data.
C) A post-install script defined in the setup script.
D) A version change handler defined within the application package.
E) Snowflake Streams and Tasks to monitor the application version and trigger the migration scripts automatically.

2. You are developing a Snowflake Native Application that provides a data enrichment service. This service requires the consumer to grant the application access to a specific table in their account. You want to ensure that upgrades to your application do not inadvertently break existing consumer configurations. You decide to use a versioned schem a. Which of the following steps are essential during the setup script execution to achieve this and maintain backward compatibility during future upgrades?

A) Create a new unversioned schema named 'APPLICATION' and install all application objects within it. This provides a consistent namespace for all consumers, regardless of the application version.
B) Grant the application role 'OWNERSHIP on the consumer's table directly. This allows the application full control and ensures consistent data access regardless of future schema changes within the application.
C) Define a custom role within the application package and grant it the necessary privileges to read the consumer's table via a secure view. Then, grant the application role the USAGE privilege on this custom role. This ensures that the application role can assume the custom role's privileges for data access.
D) Create a versioned schema using 'CREATE SCHEMA VERSION = ' . Grant the application role 'USAGE on this versioned schema, and ensure all application logic references objects within this schema.
E) Create a secure view in the versioned schema that accesses the consumer's table. Grant the application role 'SELECT on this secure view. This provides a stable interface that isolates the application from direct changes to the consumer's table.

3. You are developing a Snowflake Native Application that provides data enrichment services. A consumer reports that a specific query against a view, 'ENRICHED DATA, occasionally returns incorrect results. You suspect a race condition in the underlying stored procedure that populates a temporary table used by the view. Which of the following strategies would be MOST effective in diagnosing and resolving this issue within the application ?

A) Replace the temporary table with a permanent table with appropriate locking mechanisms to prevent concurrent modifications. Consumers will need to be notified of a minor version update.
B) Isolate the portion of the stored procedure that writes to the temporary table into a separate stored procedure with 'EXECUTE AS CALLER privileges.
C) Use Snowflake's 'GET_DDL' function to retrieve the SQL definition of the consumer's query and analyze it for potential errors.
D) Implement a retry mechanism with exponential backoff in the stored procedure to handle potential concurrency issues when writing to the temporary table.
E) Implement logging within the stored procedure to capture the execution flow and intermediate data values. Use 'SYSTEM$GET PREDECESSORS to track dependencies. Analyze the logs to identify the race condition. Use a session table rather than a temp table.

4. A Snowflake Native App is designed to process data in a consumer's account. The application requires access to multiple shared databases provided by different providers. The application provider configures their application. Snowflake is configured so that the app can see all of these shared databases. Now, to enable the Native App with the privileges it requires, what are the necessary steps to allow the application's role, , to query tables in these shared databases?

A) Grant USAGE on each shared database to the 'app_role' . Additionally, grant 'SELECT privilege on each specific table or view the application needs to access in each shared database to the 'app_role' .
B) No additional steps are required. Once the application is installed, it automatically has access to all shared databases.
C) Only grant 'IMPORTED PRIVILEGES on each shared database to the 'app_role' .
D) Grant 'IMPORTED PRIVILEGES' on each shared database to the 'app_role' . Additionally, grant 'SELECT privilege on each specific table or view the application needs to access in each shared database to the 'app_role' .
E) Grant 'ALL PRIVILEGES on each shared database to the 'app_role'. This will allow the application to access all objects within the shared databases.

5. Within a Snowflake Native Application, you need to implement a feature that is only available in the latest version of the application, and the usage of that feature needs to be tracked. How would you accomplish this within the application code, considering that you want to avoid exposing internal details about version numbers directly to the consumer?

A) Implement a UDF (User-Defined Function) that checks the application version and returns a flag indicating whether the feature is available. Use this flag in SQL queries to conditionally enable the feature and track its usage.
B) Rely on the consumer to explicitly enable the feature through a configuration parameter, then log the feature's usage.
C) Use the 'APPLICATION$VERSION' function within a stored procedure to conditionally enable the feature and log the usage to a separate table. Make sure the logs are maintained within the producer account.
D) Use Snowflake's Resource Monitors to track resource usage by different versions of the application.
E) Create a separate role that is only granted to users of the latest version, and use this role to control access to the feature. Use a view to abstract the role requirement.

Solutions: