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Question 136 - ARA-C01 discussion

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A retailer's enterprise data organization is exploring the use of Data Vault 2.0 to model its data lake solution. A Snowflake Architect has been asked to provide recommendations for using Data Vault 2.0 on Snowflake.

What should the Architect tell the data organization? (Select TWO).

A.
Change data capture can be performed using the Data Vault 2.0 HASH_DIFF concept.
Answers
A.
Change data capture can be performed using the Data Vault 2.0 HASH_DIFF concept.
B.
Change data capture can be performed using the Data Vault 2.0 HASH_DELTA concept.
Answers
B.
Change data capture can be performed using the Data Vault 2.0 HASH_DELTA concept.
C.
Using the multi-table insert feature in Snowflake, multiple Point-in-Time (PIT) tables can be loaded in parallel from a single join query from the data vault.
Answers
C.
Using the multi-table insert feature in Snowflake, multiple Point-in-Time (PIT) tables can be loaded in parallel from a single join query from the data vault.
D.
Using the multi-table insert feature, multiple Point-in-Time (PIT) tables can be loaded sequentially from a single join query from the data vault.
Answers
D.
Using the multi-table insert feature, multiple Point-in-Time (PIT) tables can be loaded sequentially from a single join query from the data vault.
E.
There are performance challenges when using Snowflake to load multiple Point-in-Time (PIT) tables in parallel from a single join query from the data vault.
Answers
E.
There are performance challenges when using Snowflake to load multiple Point-in-Time (PIT) tables in parallel from a single join query from the data vault.
Suggested answer: A, C

Explanation:

Data Vault 2.0 on Snowflake supports the HASH_DIFF concept for change data capture, which is a method to detect changes in the data by comparing the hash values of the records. Additionally, Snowflake's multi-table insert feature allows for the loading of multiple PIT tables in parallel from a single join query, which can significantly streamline the data loading process and improve performance1.

* Snowflake's documentation on multi-table inserts1

* Blog post on optimizing Data Vault architecture on Snowflake2

asked 23/09/2024
Jeremiah Hutchins
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