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Question 77 - ARA-C01 discussion

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Which Snowflake data modeling approach is designed for BI queries?

A.
3 NF
Answers
A.
3 NF
B.
Star schema
Answers
B.
Star schema
C.
Data Vault
Answers
C.
Data Vault
D.
Snowflake schema
Answers
D.
Snowflake schema
Suggested answer: B

Explanation:

A star schema is a Snowflake data modeling approach that is designed for BI queries. A star schema is a type of dimensional modeling that organizes data into fact tables and dimension tables. A fact table contains the measures or metrics of the business process, such as sales amount, order quantity, or profit margin. A dimension table contains the attributes or descriptors of the business process, such as product name, customer name, or order date. A star schema is called so because it resembles a star, with one fact table in the center and multiple dimension tables radiating from it. A star schema can improve the performance and simplicity of BI queries by reducing the number of joins, providing fast access to aggregated data, and enabling intuitive query syntax.A star schema can also support various types of analysis, such as trend analysis, slice and dice, drill down, and roll up12.

Snowflake Documentation: Dimensional Modeling

Snowflake Documentation: Star Schema

asked 23/09/2024
HNO Oo
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