Free COF-R02 Exam Braindumps (page: 25)

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A sales table FCT_SALES has 100 million records. The following Query was executed SELECT COUNT (1) FROM FCT SALES;
How did Snowflake fulfill this query?

  1. Query against the result set cache
  2. Query against a virtual warehouse cache
  3. Query against the most-recently created micro-partition
  4. Query against the metadata excite

Answer(s): D



Which cache type is used to cache data output from SQL queries?

  1. Metadata cache
  2. Result cache
  3. Remote cache
  4. Local file cache

Answer(s): B


Reference:

https://community.snowflake.com/s/article/Caching-in-Snowflake-Data-Warehouse



What is a key feature of Snowflake architecture?

  1. Zero-copy cloning creates a mirror copy of a database that updates with the original
  2. Software updates are automatically applied on a quarterly basis
  3. Snowflake eliminates resource contention with its virtual warehouse implementation
  4. Multi-cluster warehouses allow users to run a query that spans across multiple clusters
  5. Snowflake automatically sorts DATE columns during ingest for fast retrieval by date

Answer(s): D



What is a limitation of a Materialized View?

  1. A Materialized View cannot support any aggregate functions
  2. A Materialized View can only reference up to two tables
  3. A Materialized View cannot be joined with other tables
  4. A Materialized View cannot be defined with a JOIN

Answer(s): D

Explanation:

There are several limitations to using materialized views: A materialized view can query only a single table. Joins, including self-joins, are not supported.






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