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| Section | Objectives |
|---|---|
| Data Ingestion and Processing | - Batch and streaming ingestion with Auto Loader - ETL pipeline design patterns - Structured Streaming fundamentals |
| Production Pipelines and Orchestration | - Job scheduling and monitoring - Error handling and recovery strategies - Databricks Workflows |
| Delta Lake and Data Management | - Delta Lake transactions and ACID properties - Schema evolution and enforcement - Time travel and versioning |
| Databricks Lakehouse Platform Architecture | - Medallion architecture (Bronze, Silver, Gold) - Data governance concepts (Unity Catalog basics) - Workspace and cluster architecture |
| Data Modeling and Transformation | - Dimensional modeling concepts - Performance optimization techniques - Spark SQL transformations |
テーブルは次のコードで登録されます。
users と orders はどちらも Delta Lake テーブルです。recent_orders をクエリした結果を説明するステートメントはどれですか。
Correct Answer: A 🗳️
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マルチタスク ジョブでタスクとして実行するように構成されたノートブックを確認するには、どの REST API 呼び出しを使用できますか?
Correct Answer: A 🗳️
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以下のクエリで Delta Lake テーブルが作成されました。
元のクエリに誤字があったことに気づき、以下のコードが実行されました。
テーブル prod.sales_by_stor を変更し、名前を prod.sales_by_store に変更します。
2 番目のコマンドを実行するとどのような結果が発生しますか?
Correct Answer: B 🗳️
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ビジネスインテリジェンスチームは、小売業のストーリーに関する様々なサマリー指標を追跡するためのダッシュボードを設定しています。これには、前日の総売上に加え、様々な期間の合計と平均が含まれます。このダッシュボードに必要なフィールドのスキーマは次のとおりです。
需要予測のために、Lakehouseには、ほぼリアルタイムで増分更新されるすべての明細別売上の検証済みテーブルが含まれています。このテーブルはproducts_per_orderという名前で、以下のフィールドが含まれています。
長期的な売上動向に関するレポートは変動が少ないため、新しいダッシュボードを使用するアナリストはデータを1日に1回更新するだけで済みます。ダッシュボードは通常の営業日を通して多くのユーザーからインタラクティブにクエリされるため、結果が迅速に返され、各マテリアライズに関連する計算量全体が削減されます。
起こりうるコストを制御および制限しながら、エンドユーザーの期待を満たすソリューションはどれですか?
Correct Answer: C 🗳️
データエンジニアが、重複メッセージを配信するメッセージバスシステムからデータを取り込むパイプラインを構築しています。重複メッセージは1週間間隔で配信されることがあります。ターゲットはDatabricks Delta Lakeテーブルで、各レコードは1回だけ出現する必要があります。設定されたウォーターマークの外側でイベントが到着する可能性のある重複を処理するには、どのDatabricks取り込みパターンを実装すればよいでしょうか?
Correct Answer: B 🗳️
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