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Snowflake SnowPro Advanced: Data Analyst Certification Exam Sample Questions (Q169-Q174):

NEW QUESTION # 169
When connecting BI tools to Snowflake for dashboard creation, which factors must be considered to ensure effective integration? (Select all that apply)

A. Snowflake account availability only
B. Encryption requirements for Snowflake data
C. Network latency between BI tool and Snowflake
D. Compatibility of BI tool with Snowflake

Answer: B,C,D

Explanation:
Effective integration involves considering network latency, compatibility, and encryption requirements for Snowflake data.

NEW QUESTION # 170
You are building a Data Vault model in Snowflake. You have identified a Hub for Customers, a Link table relating Customers to Addresses, and several Satellite tables storing descriptive attributes of both Customers and Addresses. A new business requirement emerges: you need to efficiently query the model to find all Customers who have lived at the same Address as another Customer at any point in time. Which of the following approaches is MOST efficient and scalable for implementing this query in Snowflake, without significantly impacting the Data Vault's core principles?

A. Create a new Link table directly connecting Customers who share the same Address history, and populate it with a complex SQL query involving multiple joins on Hubs, Links, and Satellites.
B. Create a materialized view that pre-computes all Customer pairs sharing Address history. Refresh the view periodically or on-demand.
C. Use Snowflake's search optimization service on relevant columns (e.g., Address Hashkey in the Address Satellite) to accelerate the query.
D. Develop a stored procedure that iterates through all Customer records, comparing their Address histories, and stores the results in a temporary table.
E. Create a new Satellite table on the Hub_Customer that stores an array of Customer Hashkeys that have been associated with a given Address.

Answer: B

Explanation:
A materialized view is the most efficient and scalable option. It pre-computes the result, making subsequent queries very fast. Creating a new Link table within the Data Vault would violate its principle of representing facts as they occur. Search optimization service can help, but might not be as efficient as a pre-computed result. A stored procedure iterating through all records is highly inefficient. Adding an array to a Satellite table will cause potential data integrity issues and performance bottlenecks as the array grows, while also deviating from the data vault principles.

NEW QUESTION # 171
When automating data processing, what significance do logging and monitoring solutions hold in ensuring seamless operations?

A. These solutions have no impact on data processing.
B. Logging and monitoring solutions aid in identifying processing bottlenecks.
C. They solely monitor system performance.
D. They restrict access to processed data.

Answer: B

Explanation:
Logging and monitoring solutions help identify processing bottlenecks, ensuring seamless operations in automated data processing.

NEW QUESTION # 172
You're designing a data pipeline in Snowflake to process order data'. The raw order data, including customer information, is stored in a JSON format within a single 'RAW ORDERS table. Due to privacy regulations, you need to mask the customer's email addresses before loading the data into a 'CLEANED ORDERS' table, while maintaining referential integrity. Furthermore, you want to track the data lineage (which raw order resulted in which cleaned order) in a separate 'ORDER LINEAGE' table. Which of the following approaches achieves these requirements effectively and efficiently? (Select TWO)

A. Use a Snowpipe to load data into 'RAW ORDERS. Create a stream on 'RAW ORDERS'. Create a task chained to the stream that reads the new records from the stream, masks the email, inserts the cleaned data into 'CLEANED_ORDERS' table and inserts lineage information into the 'ORDER _ LINEAGE table.
B. Implement a stored procedure that reads data from 'RAW ORDERS, masks the email using SHA256, inserts the cleaned data into 'CLEANED ORDERS', and simultaneously inserts lineage information into 'ORDER LINEAGE. Schedule this stored procedure to run periodically.
C. Create a masking policy on the 'email' column of the 'RAW_ORDERS' table. Then, create a task to copy all data from 'RAW_ORDERS to 'CLEANED_ORDERS. Finally, create a separate task that runs after the copying task to populate the 'ORDER_LINEAGE table with relevant mappings.
D. Create a view on the 'RAW ORDERS table that masks the email address. Load the raw order data into 'RAW ORDERS table using Snowpipe and a stream. Use a task chained to the stream to ingest the view into 'CLEANED_ORDERS and populate lineage information into 'ORDER_LINEAGE table.
E. Create a masking policy on the 'email' column in 'CLEANED ORDERS'. Create a stream on RAW ORDERS, then create a task to insert data from 'RAW ORDERS' into 'CLEANED ORDERS' and to INSERT the order to 'ORDER LINEAGE

Answer: A,B

Explanation:
Option B: A stored procedure provides the most control over the masking process and lineage tracking, ensuring data is masked during the transfer. It allows you to perform all operations (masking, inserting into 'CLEANED ORDERS, and inserting into 'ORDER LINEAGE) within a single transaction. Option C: Snowpipe loading data to RAW_ORDERS, using streams to capture the data, and scheduling the tasks to read from the stream, while masking and adding lineage information provides automation and efficiency. Option A is incorrect, as it copies all data using a task into 'CLEANED_ORDERS and then masks the email on RAW_ORDERS after data is already in 'CLEANED_ORDERS'. Option D is incorrect as masking policy is on rather than Option E requires a view to mask email address and is not an effective approach to apply a masking policy. Also, its not the right procedure to load view into a table.

NEW QUESTION # 173
You have a table named 'sales_data' with a column 'product_details' of type VARIANT containing JSON data for various products. The JSON structure is inconsistent; some products have a 'size' attribute as a string, while others have it as an integer, and some don't have the attribute at all. You need to extract the 'size' as a consistent numeric value (NULL if it's missing) for analysis. Which SQL statement using table functions and data type conversion techniques correctly and efficiently handles this data inconsistency?

Answer: B

Explanation:
TRY_TO_NUMBER() is the most robust and concise way to handle potential data type inconsistencies and missing values when extracting data from VARIANT columns. It attempts to convert the value to a NUMBER and returns NULL if the conversion fails. This elegantly handles both string and integer representations of 'size', as well as cases where 'size' is missing from the JSON. Using Case statements or IS_NUMBER requires more verbose logic and can be less efficient than using the built-in function. NVL replaces NULL with 0, which isn't suitable as the question asks for NULL if missing.

NEW QUESTION # 174
......

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