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Snowflake COF-C03日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Semi-Structured Data | 10% | - VARIANT data type - Array and object operations - Parsing and flattening semi-structured data |
| Topic 2: Virtual Warehouses | 15% | - Cache concepts (warehouse, result, metadata) - Multi-cluster warehouses - Warehouse monitoring and troubleshooting - Warehouse creation and configuration - Warehouse sizing and scaling |
| Topic 3: Time Travel & Cloning | 10% | - Zero-copy cloning - Fail-safe concepts - UNDROP and historical data access - Time travel concepts and retention |
| Topic 4: Data Sharing | 12% | - Data listing marketplace - Shares and reader accounts - Reader account management - Private sharing vs. Data Exchange |
| Topic 5: Security & Access Control | 10% | - Authorization (roles, privileges) - Governance best practices - Authentication (SSO, MFA) - Row-level and column-level security - Masking policies |
| Topic 6: Performance Optimization & Monitoring | 4% | - Query history and monitoring - Resource optimization techniques - Query profiling and performance tuning |
| Topic 7: Account Objects | 8% | - Resource monitors - Warehouses, databases, and schemas hierarchy - Organizations and accounts structure |
| Topic 8: Databases, Tables & Views | 18% | - Table types (permanent, transient, temporary) - Clustering and micro-partitions - Data manipulation (DML operations) - Views (standard, materialized, secure) - Stored procedures and UDFs - Column types and sequences |
| Topic 9: Data Loading & Unloading | 15% | - Bulk loading with COPY command - File formats (JSON, CSV, Parquet, AVRO) - Data ingestion best practices - Data unloading and staging - Continuous loading with Snowpipe |
| Topic 10: Cloud Platform Overview & Snowflake Key Concepts | 8% | - Snowflake architecture layers (storage, compute, services) - Virtual warehouse concepts and credit usage - Snowflake editions and features |
Snowflake SnowPro® Core Certification (COF-C03日本語版) Sample Questions:
Question 1
挿入時に上書きオプションを使用するには、ロールにどの権限を付与する必要がありますか？
A. 削除
B. 更新
C. 切り捨てる
D. 選択
Question 2
セキュアビューが複数のデータベース内のデータを参照できるようにするには、共有に対してどの権限を付与する必要がありますか？
A. セキュアビューで使用されるテーブルに対するSELECT
B. データベースのREFERENCE_USAGE
C. データベースとスキーマに関する共有
D. アカウントのCREATE_SHARE
Question 3
Snowflakeにおけるマテリアライズドビューの特徴は何ですか？
A. 集計関数は、マテリアライズド ビューのウィンドウ関数として使用できます。
B. マテリアライズド ビューでは結合は許可されません。
C. マテリアライズド ビューの基となるクエリでは、複数のテーブルを結合できます。
D. マテリアライズド ビューのクローンはユーザーが直接作成できます。
Question 4
Snowflakeのどの機能を使えば、ファイルがステージ内で利用可能になった時点でクラウドストレージからデータを読み込むことができますか？
A. 直接共有
B. COPY_INTO <location> コマンド
C. データレプリケーション
D. スノーパイプ
Question 5
QUERY_HISTORYビューにあるどのメトリックの計算式を使用すれば、仮想ウェアハウスのキャッシュを最適化することで、実行時間の長いクエリのパフォーマンスが向上するかどうかを判断できますか？
A. 書き込まれたバイト数とキャッシュからスキャンされた割合を掛け合わせます。
B. スキャンされたパーティション数とキャッシュからのスキャン率を掛け合わせます。
C. スキャンされたバイト数とキャッシュミスによるスキャン率を掛け合わせます。
D. スキャンしたバイト数とキャッシュからスキャンした割合を掛け合わせます。
Solutions:
| Question 1 Answer: A | Question 2 Answer: B | Question 3 Answer: C | Question 4 Answer: D | Question 5 Answer: D |
