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Question 101 - DEA-C01 discussion

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Which one is not the Core benefits of micro-partitioning

A.
Snowflake micro-partitions are derived automatically they do not need to be explicitly defined upfront or maintained by users.
Answers
A.
Snowflake micro-partitions are derived automatically they do not need to be explicitly defined upfront or maintained by users.
B.
Enables extremely efficient DML and fine-grained pruning for faster queries.
Answers
B.
Enables extremely efficient DML and fine-grained pruning for faster queries.
C.
Micro-partitions can overlap in their range of values, helps data skewing.
Answers
C.
Micro-partitions can overlap in their range of values, helps data skewing.
D.
Columns are stored independently within micro-partitions, often referred to as colum-nar storage.
Answers
D.
Columns are stored independently within micro-partitions, often referred to as colum-nar storage.
E.
Columns are also compressed individually within micro-partitions.
Answers
E.
Columns are also compressed individually within micro-partitions.
Suggested answer: C

Explanation:

The benefits of Snowflake's approach to partitioning table data include:

· In contrast to traditional static partitioning, Snowflake micro-partitions are derived automatically; they don't need to be explicitly defined up-front or maintained by users.

· As the name suggests, micro-partitions are small in size (50 to 500 MB, before compression), which enables extremely efficient DML and fine-grained pruning for faster queries.

· Micro-partitions can overlap in their range of values, which, combined with their uniformly small size, helps prevent skew.

· Columns are stored independently within micro-partitions, often referred to as columnar storage.

This enables efficient scanning of individual columns; only the columns referenced by a query are scanned.

· Columns are also compressed individually within micro-partitions. Snowflake automatically determines the most efficient compression algorithm for the columns in each micro-partition.

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asked 23/09/2024
wilson rodriguez
40 questions
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