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| Section | Objectives |
|---|---|
| Data Modeling and Transformation | - Dimensional modeling concepts - Spark SQL transformations - Performance optimization techniques |
| Delta Lake and Data Management | - Delta Lake transactions and ACID properties - Time travel and versioning - Schema evolution and enforcement |
| Data Ingestion and Processing | - Structured Streaming fundamentals - ETL pipeline design patterns - Batch and streaming ingestion with Auto Loader |
| Production Pipelines and Orchestration | - Error handling and recovery strategies - Job scheduling and monitoring - Databricks Workflows |
| Databricks Lakehouse Platform Architecture | - Data governance concepts (Unity Catalog basics) - Workspace and cluster architecture - Medallion architecture (Bronze, Silver, Gold) |
태스크 오케스트레이터가 한 시간 간격으로 두 개의 작업을 실행하도록 구성되었습니다. 첫 번째 작업은 외부 시스템에서 Parquet 데이터를 /mnt/raw_orders/에 마운트된 디렉터리에 기록하는 것입니다. 이 데이터가 기록된 후, 다음 코드가 포함된 Databricks 작업이 실행됩니다.
customer_id와 order_id 필드가 각 주문을 고유하게 식별하는 복합 키 역할을 하고, time 필드는 해당 레코드가 소스 시스템에 대기열에 추가된 시간을 나타낸다고 가정합니다.
상위 시스템에서 단일 주문에 대해 몇 시간 간격으로 중복 항목이 대기열에 추가되는 경우가 종종 발생하는 것으로 알려져 있다면, 다음 중 어떤 설명이 정확합니까?
Correct Answer: A 🗳️
사용자는 DLT 기대치를 사용하여 파생 테이블 보고서에 원본의 모든 레코드가 포함되어 있는지, 그리고 테이블 validation_copy에 포함된 레코드가 있는지 검증하려고 합니다.
사용자는 보고서 테이블 정의에 기대값을 추가하는 방식으로 이를 시도했지만 실패했습니다.
DLT 기대값을 사용하여 이 테이블에 예상되는 모든 레코드가 있는지 검증할 수 있는 접근 방식은 무엇일까요?
Correct Answer: A 🗳️
Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).
데이터 설계자는 외부 소스에서 Databricks Lakehouse로 데이터가 수집되면 테이블 액세스 제어를 활용하여 모든 프로덕션 테이블 및 뷰에 대한 권한을 관리하기로 결정했습니다.
핵심 엔지니어링 그룹에 운영 데이터베이스에 대한 대화형 쿼리 권한을 부여하기 위해 다음과 같은 로직이 실행되었습니다.
prod 데이터베이스에 대한 사용 권한을 eng에 부여합니다.
GRANT SELECT ON DATABASE prod TO eng;
eng 그룹에 부여된 권한이 이것뿐이고 이 사용자들이 워크스페이스 관리자가 아니라고 가정할 때, 이들의 권한을 설명하는 문장은 무엇일까요?
Correct Answer: E 🗳️
Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).
데이터 팀의 구조화된 스트리밍 작업은 하위 마케팅 대시보드를 업데이트하기 위해 품목 판매량에 대한 집계 데이터를 계산하도록 구성되어 있습니다. 마케팅 팀은 각 품목에 대해 해당 프로모션 코드가 사용된 횟수를 추적하기 위한 새로운 필드를 추가했습니다. 주니어 데이터 엔지니어는 기존 쿼리를 다음과 같이 업데이트할 것을 제안했습니다. 제안된 변경 사항은 굵게 표시되어 있습니다.
원래 검색어:
제안된 질의:
제안된 쿼리를 실제 운영 환경에 적용하려면 어떤 단계를 추가로 완료해야 합니까?
Correct Answer: E 🗳️
Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).
프로덕션 환경에 구조화된 스트리밍 작업을 예약할 때, 쿼리 실패 시 자동으로 복구되고 비용을 낮게 유지하는 구성은 무엇입니까?
Correct Answer: B 🗳️
Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).
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