Practice Free DAA-C01 Exam Online Questions
What considerations are essential when identifying the volume of data to be collected in a collection system? (Select all that apply)
- A . Data redundancy requirements
- B . Speed of data retrieval
- C . Frequency of data analysis
- D . Available storage capacity
C,D
Explanation:
Identifying the volume of data involves considering available storage capacity and the frequency of data analysis.
How do automated and repeatable tasks contribute to maintaining reports and dashboards to meet business requirements?
- A . Automated tasks increase complexity in dashboard management.
- B . They hinder scalability in reports and dashboards.
- C . Automated tasks ensure consistency and reduce manual effort.
- D . Repeatable tasks solely enhance data updates in dashboards.
C
Explanation:
Automated tasks ensure consistency and reduce manual effort in maintaining reports and dashboards.
In Snowflake, how does leveraging Parquet format contribute to optimizing query performance and storage efficiency?
- A . Limits query execution time
- B . Impedes data compression and decompression capabilities
- C . Parquet format accelerates only metadata retrieval
- D . Enhances query performance and reduces storage requirements
D
Explanation:
Parquet format optimizes query performance and storage efficiency by enhancing data compression, reducing storage needs, and accelerating query execution in Snowflake.
What types of Snowflake functions are available for data analysis and manipulation? (Select all that apply)
- A . Scalar functions
- B . System functions
- C . Aggregate functions
- D . Complex functions
A,B,C
Explanation:
Snowflake functions include scalar, aggregate, and system functions for data analysis and manipulation.
When maintaining reports and dashboards, why is it essential to build automated and repeatable tasks?
- A . Automated tasks increase dashboard management complexity.
- B . Repeatable tasks hinder data updates in dashboards.
- C . They ensure inconsistency in reports and dashboards.
- D . Automated tasks reduce manual efforts, ensuring consistency.
D
Explanation:
Automated tasks reduce manual efforts, ensuring consistency in reports and dashboards.
When working with semi-structured data in Snowflake, how do built-in functions for traversing, flattening, and nesting aid in data manipulation?
- A . They only work with specific file formats
- B . They facilitate handling complex and nested data structures
- C . They limit data transformation possibilities
- D . They restrict data access for user roles
B
Explanation:
Built-in functions for semi-structured data in Snowflake simplify handling complex and nested structures, making data manipulation more manageable and enhancing flexibility in data transformation.
What actions can be taken when responding to processing failures in data processing solutions? (Select all that apply)
- A . Restart the entire data processing flow
- B . Log error details for analysis
- C . Resume processing from the point of failure
- D . Identify the root cause of failure
B,C,D
Explanation:
Responding to processing failures involves logging error details, identifying the root cause, and resuming processing from the failure point.
When handling CSV, JSON, and Parquet data types for consumption, what advantages do Parquet files typically offer over the others?
- A . JSON files offer more flexibility in schema changes
- B . CSV files are more efficient in handling nested data structures
- C . Parquet files provide better compression and query performance
- D . Parquet files are not suitable for large datasets
C
Explanation:
Parquet files often provide better compression and query performance compared to CSV and JSON due to their columnar storage format, enhancing efficiency in handling large datasets.
How do constraints contribute to ensuring data integrity in Snowflake?
- A . They enforce data security measures.
- B . Constraints ensure redundant data storage.
- C . Constraints restrict data import from external sources.
- D . They impose rules for maintaining data accuracy and consistency.
D
Explanation:
Constraints in Snowflake impose rules for maintaining data accuracy and consistency, ensuring data integrity.
What actions are involved in performing general DML (Data Manipulation Language) operations in Snowflake? (Select all that apply)
- A . Merging data from multiple tables
- B . Updating existing data
- C . Deleting data entirely
- D . Inserting new data
B,C,D
Explanation:
General DML operations in Snowflake include inserting, updating, and deleting data.