최신버전DAA-C01최신버전인기덤프자료완벽한시험최신덤프공부

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Snowflake DAA-C01 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Modeling and Performance Optimization	- Performance tuning 1. Warehouse sizing and auto-suspend/auto-resume 2. Clustering and pruning techniques - Modeling approaches in Snowflake 1. Data normalization vs denormalization 2. Star and snowflake schemas
Topic 2: Data Loading and Unloading	- Data ingestion methods 1. COPY INTO and bulk loading 2. Continuous ingestion and Snowpipe concepts - Data export 1. UNLOAD and external stages
Topic 3: Security, Governance, and Data Sharing	- Access control and security 1. Authentication and encryption concepts 2. Role-based access control (RBAC) - Data sharing and governance 1. Data masking and policies 2. Secure data sharing
Topic 4: Snowflake Architecture and Data Platform Fundamentals	- Snowflake architecture concepts 1. Virtual warehouses and scaling 2. Cloud services layer, compute layer, storage layer - Data platform fundamentals 1. Data lifecycle in Snowflake 2. Separation of storage and compute
Topic 5: Data Transformation and Analysis	- SQL-based transformations 1. Joins, aggregations, window functions 2. Semi-structured data (VARIANT, JSON, XML) - Analytical workloads 1. Query optimization for analytics 2. Materialized views and caching

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최신 SnowPro Advanced DAA-C01 무료샘플문제 (Q63-Q68):

질문 # 63
A financial analyst is using Snowflake to forecast stock prices based on historical data'. They have a table named 'STOCK PRICES with columns 'TRADE DATE (DATE) and 'CLOSING PRICE (NUMBER). They want to implement a custom moving average calculation using window functions to smooth out short-term fluctuations and identify trends. Specifically, they need to calculate a 7-day weighted moving average, where the most recent day has the highest weight and the weights decrease linearly. Which SQL statement correctly implements this weighted moving average calculation?

A. Option D
B. Option C
C. Option A
D. Option B
E. Option E

정답：E

설명：
Option E is the correct answer because it accurately calculates the 7-day weighted moving average with linearly decreasing weights. It assigns weights from 7 (most recent) down to 1 (oldest) within the 7-day window. The weight calculation '(7 - ROW_NUMBER() OVER (ORDER BY TRADE DATE DESC) + 1)' ensures the most recent date has a weight of 7, and the weights decrease linearly to 1. The sum of the weighted closing prices is then divided by the sum of the weights to get the weighted average. Other options are incorrect because they either calculate a simple moving average, apply incorrect weights, or have syntactic errors. Option B and D's row_number() is ordered ascending, resulting in the oldest data point having the highest weight.

질문 # 64
A financial institution needs to build a dashboard to monitor fraudulent transactions. They have transaction data (amount, timestamp, location, merchant category), customer data (age, income, credit score), and fraud flags. They want to identify patterns and correlations that indicate potentially fraudulent activity. Which of the following visualizations and Snowflake features, when used in combination, would be MOST effective for this purpose? (Select TWO)

A. Use Snowflake's secure data sharing to share the raw transaction data with a third-party analytics vendor.
B. Develop an interactive dashboard using Power BI connected to Snowflake, incorporating a geographical map showing transaction locations, a time series chart of transaction volume, and a scatter plot of transaction amount vs. customer credit score. Use anomaly detection algorithms in Snowflake (via Snowpark or stored procedures using Python) to highlight unusual transactions. Implement User defined table Function in Power BI to generate more data.
C. Export the transaction data to a data lake and use Spark to perform fraud detection.
D. Utilize a heatmap visualization in a Tableau dashboard to show the correlation between merchant category, transaction amount, and fraud flag. Implement interactive filters for customer age, income, and location. Implement Snowflake Row Access Policy to restrict data to specific users.
E. Create a static report showing the total number of fraudulent transactions per month, using Snowflake's aggregate functions.

정답：B,D

설명：
Options B and D are the most effective. Option B utilizes an interactive dashboard with Power BI, incorporating geographical, temporal, and scatter plot visualizations to identify patterns. Anomaly detection algorithms in Snowflake further enhance the detection capabilities. Option D uses a heatmap to show correlations between key variables and implements interactive filters for detailed exploration. Implementing Row Access Policy would control data access, adding a security layer on top of sensitive financial data. Option A is not related to visualization or identifying correlations. Option C provides only a high-level summary. Option E involves exporting data outside Snowflake, which is less efficient and potentially less secure than using Snowflake's built-in capabilities.

질문 # 65
You have a Snowflake table 'EMPLOYEES' with columns 'EMPLOYEE ID' ONT, PRIMARY KEY), 'SALARY' and 'DEPARTMENT' (VARCHAR). You need to enforce the following business rules: 1. 'SALARY' must be a positive value. 2. 'DEPARTMENT' must be one of the following values: 'SALES', 'MARKETING', 'ENGINEERING'. 3. If the Employee is in 'SALES' Department, Salary should be between 50000 and 100000. Which of the following is the most appropriate and efficient approach using Snowflake constraints and features?

A. Enforce rules using stored procedure at the time of insertion and updation.
B. Use CHECK constraint for SALARY, Create a Lookup table for Departments, and apply a Foreign key relationship for DEPARTMENT field in EMPLOYEE table.
C. Use a CHECK constraint for 'SALARY > , an ENUM type for 'DEPARTMENT' , and a TRIGGER to enforce the salary range rule for the 'SALES' department.
D. Use CHECK constraints for both rules and a third CHECK constraint to combine rules 2 and 3 to apply on each record.
E. Use a CHECK constraint for 'SALARY > , a CHECK constraint 'DEPARTMENT IN ('SALES', 'MARKETING', 'ENGINEERING') , and a third CHECK constraint 'CASE WHEN DEPARTMENT = 'SALES' THEN SALARY BETWEEN 50000 AND 100000 ELSE TRUE END'.

정답：E

설명：
Option D is the most appropriate and efficient. CHECK constraints are designed for these types of validations. The 'CASE' statement within the third CHECK constraint allows conditional validation based on the 'DEPARTMENT value. CHECK constriants are enforced at the time of record insert or update. Stored procedures could be an option but are not the most appropriate. Snowflake does not directly support ENUM types for column definitions. Creating Lookup table with Foreign key is another option.

질문 # 66
When selecting and implementing an effective data model, what considerations are crucial for ensuring its suitability for BI requirements? (Select all that apply)

A. Conformity to specific database standards only
B. Extensive data denormalization
C. Performance and ease of maintenance
D. Scalability and flexibility

정답：C,D

설명：
Effective data models should ensure scalability, flexibility, good performance, and ease of maintenance to meet BI requirements effectively.

질문 # 67
You are analyzing website traffic data stored in a Snowflake table named 'page views'. The table has columns 'user id', 'page_url', and 'timestamp'. You need to identify users who visited a specific sequence of pages ('/home', '[products', '/cart', '[checkout') within a 5- minute window. Which analytic function and additional Snowflake features would be MOST efficient and accurate to achieve this?

A. Use LAST VALUE and FIRST VALUE along with CASE statements, ordering by timestamp for each user, followed by joining the table to itself four times to find the page sequence.
B. Create a stored procedure that iterates through each user's page views, sorted by timestamp, checking for the page sequence within the 5-minute window.
C. Use 'SESSIONIZE to define user sessions based on a 5-minute inactivity gap. Then, use window functions to identify users who visited all four specified pages within the same session. This requires Snowflake Enterprise Edition.
D. Use 'LEAD and 'LAG' functions to check the next and previous page visits, ordered by 'timestamp' within each , then use a 'QUALIFY' clause with conditional statements to identify the correct sequence and timeframe.
E. Use to check previous page visits, ordered by 'timestamp' within each 'user_id' , and then filter based on the sequence. Create a user-defined function (UDF) in Python to handle the 5-minute window logic.

정답：D

설명：
Option B is the most efficient and accurate. Using LEAD and LAG allows direct comparison of adjacent events in time, and the QUALIFY clause provides a concise way to filter based on complex conditions. Sessionize is also valid in Enterprise Edition. While UDFs (A) and stored procedures (D) are possible, they are generally less performant than SQL analytic functions. Option E, self-joining the table multiple times, would be inefficient and difficult to maintain.

질문 # 68
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최신버전DAA-C01최신버전인기덤프자료완벽한시험최신덤프공부

Snowflake DAA-C01 Exam Syllabus Topics:

최신버전 DAA-C01최신버전 인기 덤프자료 덤프데모문제 다운

최신 SnowPro Advanced DAA-C01 무료샘플문제 (Q63-Q68):