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Updated: Oct 30, 2026
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Databricks Databricks-Certified-Data-Engineer-Associate日本語 Exam Overview:
| Certification Vendor: | Databricks |
|---|---|
| Exam Name: | Databricks Certified Data Engineer Associate Exam |
| Exam Number: | DE-A |
| Available Languages: | English |
| Real Exam Qty: | 45 scored multiple-choice questions |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple-choice, Scenario-based questions, Proctored online or test center |
| Passing Score: | Approximately ~70% (not officially fixed/publicly guaranteed) |
| Related Certifications: | Databricks Certified Data Engineer Professional |
| Exam Price: | USD 200 |
| Certificate Validity Period: | 2 years |
| Recommended Training: | Databricks Data Engineering Learning Path (Databricks Academy) Official Data Engineering with Databricks Course |
| Exam Registration: | Databricks Certification Portal |
| Sample Questions: | Databricks Databricks-Certified-Data-Engineer-Associate日本語 Sample Questions |
| Exam Way: | Online proctored exam or test center |
| Pre Condition: | No formal prerequisites required; recommended ~6 months hands-on experience with Databricks, Spark SQL, and PySpark. |
| Official Syllabus URL: | https://www.databricks.com/learn/certification/data-engineer-associate |
Databricks Databricks-Certified-Data-Engineer-Associate日本語 Exam Syllabus Topics:
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Reference: https://www.databricks.com/learn/certification/data-engineer-associate
Databricks Certified Data Engineer Associate Exam (Databricks-Certified-Data-Engineer-Associate日本語版) Sample Questions:
データエンジニアは、既存の顧客情報を更新し、新規顧客情報を挿入し、重複データが作成されないように、顧客レコードのバッチを毎日デルタテーブルに適用する必要があります。
単一の原子操作でこれを実現するステートメントはどれですか？
- A. CREATE OR REPLACE TABLE customers AS SELECT * FROM updates
- B. INSERT OVERWRITE TABLE customers SELECT * FROM updates
- C. INSERT INTO customers SELECT * FROM updates
- D. MERGE INTO customers t USING updates s ON t.customer_id = s.customer_id WHEN MATCHED THEN UPDATE SET * WHEN NOT MATCHED THEN INSERT *
Correct Answer: D 🗳️
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Lakeflow Declarative Pipeline (Delta Live Tables) では、パイプラインの実行中に order_id が null のレコードが silver テーブルから破棄されるように、データ エンジニアが確認する必要があります。
どの期待条項を使用すべきでしょうか？
- A. 制約 valid_id EXPECT (order_id IS NOT NULL) ON VIOLATION FAIL UPDATE
- B. 制約 valid_id は (order_id が NULL ではない) を期待します
- C. ALTER TABLE silver_orders ADD CONSTRAINT valid_id CHECK (order_id IS NOT NULL)
- D. 制約 valid_id EXPECT (order_id IS NOT NULL) ON VIOLATION DROP ROW
Correct Answer: D 🗳️
データエンジニアは、eコマース取引のDeltaテーブルのデータレイアウトとクエリパフォーマンスを最適化する必要があります。このテーブルは、時間ベースのクエリに役立つ日付列「purchase_date」と、カーディナリティの高いユーザー統計列「customer_id」による検索を最適化しない日付列「purchase_date」でパーティション分割されています。
このテーブルは通常、特定の日付範囲内の「customer_id」をフィルターとしてクエリされますが、このデータは各パーティション内の複数のファイルに分散しているため、パーティション全体のスキャンが発生し、実行時間とコストが増加します。
データエンジニアは、効率的な読み取りのためにデータレイアウトをどのように最適化すべきでしょうか？
- A. 「customer_id」と「purchase_date」に基づいて、Liquidクラスタリングを実装するテーブルを変更します。
- B. テーブルを「customer_id」でパーティション分割するように変更します。
- C. 既存のパーティショニングを維持しながら、「customer_id」に対してリキッドクラスタリングを実装するテーブルを変更します。
- D. クラスター上でデルタキャッシュを有効にして、頻繁に行われる読み取りをキャッシュし、パフォーマンスを向上させます。
Correct Answer: A 🗳️
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データエンジニアが外部テーブルを管理対象テーブルに変換します。このテーブルからデータを読み取る構造化ストリーミングジョブは、変換中も実行され続けます。変換が完了すると、ストリーミングジョブは新しいレコードの処理を停止します。データエンジニアはこの問題をどのように解決すべきでしょうか？
- A. 変換されたテーブルに対してREFRESH TABLEを実行し、ストリーミングチェックポイントを更新します。
- B. 新しい管理ストレージの場所に対してストリーミングジョブに追加の権限を付与します。
- C. ストリーミングチェックポイントディレクトリを削除し、ジョブを最初から再処理します。
- D. ストリーミングジョブを再起動して、新しい管理対象テーブルの場所を認識させます。
Correct Answer: D 🗳️
Explanation: Only visible for Pass4training members. You can sign-up / login (it's free).
データエンジニアリングチームには2つのテーブルがあります。1つ目のテーブル「march_transactions」は、3月のすべての小売取引のコレクションです。2つ目のテーブル「april_transactions」は、4月のすべての小売取引のコレクションです。これらのテーブル間に重複レコードはありません。
march_transactions と april_transactions のすべてのレコードを重複レコードなしで含む新しいテーブル all_transactions を作成するには、次のコマンドのどれを実行する必要がありますか?
- A. all_transactions テーブルを作成する
march_transactions から * を選択
INTERSECT SELECT * from april_transactions; - B. all_transactions テーブルを作成する
march_transactions から * を選択
外部結合 SELECT * FROM april_transactions; - C. all_transactions テーブルを作成する
march_transactions から * を選択
UNION SELECT * FROM april_transactions; - D. all_transactions テーブルを CREATE する
march_transactions から * を選択
内部結合 SELECT * FROM april_transactions; - E. すべてのトランザクションをテーブルとして作成する
march_transactions から * を選択
MERGE SELECT * FROM april_transactions;
Correct Answer: C 🗳️
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