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| Certification Vendor: | Snowflake |
|---|---|
| Exam Name: | SnowPro Core Certification Exam |
| Exam Number: | COF-C02 |
| Exam Format: | Multiple Select, Multiple Choice |
| Exam Price: | $175 USD |
| Real Exam Qty: | 100 |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Related Certifications: | SnowPro Advanced Architect SnowPro Advanced Data Engineer SnowPro Advanced Administrator |
| Passing Score: | 70% |
| Certificate Validity Period: | 2 years |
| Sample Questions: | Snowflake COF-C02 Sample Questions |
| Exam Way: | Online proctored (via PSI) or in-person at testing center |
| Pre Condition: | Recommended: 6+ months of hands-on Snowflake experience; Basic SQL knowledge; Understanding of data warehouse concepts |
| Official Syllabus URL: | https://www.snowflake.com/certification/ |
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Snowflake COF-C02 (SnowPro Core Certification) 認定試験は、Snowflakeのコア機能に深い理解が必要とされる厳しい試験です。この試験は、90分以内に完了しなければならない60問の多肢選択問題から構成されています。問題は、Snowflakeのアーキテクチャ、データのロードとアンロード、データウェアハウジング、およびデータ管理に関する候補者の知識をテストするように設計されています。この試験はオンラインで実施され、世界中のどこからでも受験することができます。
質問 # 1080
What transformations are supported in a CREATE PIPE ... AS COPY ... FROM (....) statement? (Select TWO.)
正解：A、B
解説：
In a CREATE PIPE ... AS COPY ... FROM (....) statement, the supported transformations include filtering data using an optional WHERE clause and omitting columns. The WHERE clause allows for the specification of conditions to filter the data that is being loaded, ensuring only relevant data is inserted into the table.
Omitting columns enables the exclusion of certain columns from the data load, which can be useful when the incoming data contains more columns than are needed for the target table.
References:
* [COF-C02] SnowPro Core Certification Exam Study Guide
* Simple Transformations During a Load1
質問 # 1081
A user needs to MINIMIZE the cost of large tables that are used to store transitory data. The data does not need to be protected against failures, because the data can be reconstructed outside of Snowflake.
What table type should be used?
正解：B
解説：
For minimizing the cost of large tables that are used to store transitory data, which does not need to be protected against failures because it can be reconstructed outside of Snowflake, the best table type to use is Transient. Transient tables in Snowflake are designed for temporary or transitory data storage and offer reduced storage costs compared to permanent tables. However, unlike temporary tables, they persist across sessions until explicitly dropped.
* Why Transient Tables: Transient tables provide a cost-effective solution for storing data that is temporary but needs to be available longer than a single session. They have lower data storage costs because Snowflake does not maintain historical data (Time Travel) for as long as it does for permanent
* tables.
* Creating a Transient Table:
* To create a transient table, use the TRANSIENT keyword in the CREATE TABLE statement:
CREATE TRANSIENT TABLE my_transient_table (...);
* Use Case Considerations: Transient tables are ideal for scenarios where the data is not critical, can be easily recreated, and where cost optimization is a priority. They are suitable for development, testing, or staging environments where data longevity is not a concern.
Reference: For more details on transient tables and their usage scenarios, refer to the Snowflake documentation on table types: https://docs.snowflake.com/en/sql-reference/sql/create-table.html#table-types
質問 # 1082
A stream can be created on which Snowflake objects to record data manipulation language(DML) changes?
(Select TWO).
正解：C、D
解説：
Snowflake streams are objects that enable users to track changes (inserts, updates, and deletes) to the data in tables, facilitating real-time data processing and integration workflows. Streams can be created on standard tables, capturing DML changes made to these tables so that downstream processes can consume the changes incrementally. This feature supports efficient data ETL, replication, and real-time analytics by providing a mechanism to process only the data that has changed. Note: The correct options should likely include a distinction between "Standard tables" and another object type such as "External tables" rather than repeating
"Standard tables" twice.References: Snowflake Documentation on Streams
質問 # 1083
Which SQL command can be used to verify the privileges that are granted to a role?
正解：C
解説：
To verify the privileges that have been granted to a specific role in Snowflake, the correct SQL command is SHOW GRANTS TO ROLE <Role Name>. This command lists all the privileges granted to the specified role, including access to schemas, tables, and other database objects. This is a useful command for administrators and users with sufficient privileges to audit and manage role permissions within the Snowflake environment.
Reference:
Snowflake Documentation: SHOW GRANTS
質問 # 1084
Secured Data Sharing is allowed for which Snowflake database objects? (Select TWO).
正解：D、E
解説：
Snowflake allows secure data sharing for specific database objects to ensure data is shared securely and efficiently. The primary objects that can be shared securely are tables and secure views.
Tables: Share actual data stored in tables.
Secure Views: Share derived data while protecting the underlying table structures and any sensitive information.
Reference:
Snowflake Documentation: Introduction to Secure Data Sharing
Snowflake Documentation: Creating Secure Views
質問 # 1085
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COF-C02模擬問題: https://www.jpexam.com/COF-C02_exam.html
ちなみに、Jpexam COF-C02の一部をクラウドストレージからダウンロードできます：https://drive.google.com/open?id=1j1B_jbqtdh3rjyY3iTX1kToVfTUHkWqS