Snowflake Certification Practice Test

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What happens to the warehousing cache entry when the underlying data changes?

It is retained indefinitely
It is invalidated
It is refreshed
It is stored permanently

The correct answer is: It is invalidated

When the underlying data changes, the warehousing cache entry is invalidated. This ensures that the next time a query is run, it will not use stale or outdated information from the cache. Caching in Snowflake is designed to optimize performance by storing the results of previous queries, but it must remain accurate. If the data that the cache relies on is modified, retaining the cache entry could lead to inaccurate query results. Therefore, invalidation of the cache entry is a necessary mechanism to maintain data integrity and ensure that users are working with the most current data available. The other options imply different behaviors that do not align with Snowflake's caching strategy. Indefinite retention, refreshing, or permanent storage would not address the need for data accuracy immediately following updates, which is why invalidation is the most appropriate action in this scenario.