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| Section | Weight | Objectives |
|---|---|---|
| Data Processing | 28% | - Data Transformation - Spark SQL - ETL Pipelines - Structured Streaming |
| Monitoring and Troubleshooting | 16% | - Monitoring - Performance Optimization - Troubleshooting |
| Data Quality and Governance | 12% | - Data Lineage - Data Quality - Governance |
| Databricks Lakehouse Platform | 24% | - Lakehouse Architecture - Delta Lake - Unity Catalog - Data Management |
| Data Modeling and Storage | 20% | - Data Modeling - File Formats - Storage Optimization |
user_ltv라는 테이블은 여러 팀의 데이터 분석가들이 사용할 뷰를 생성하는 데 사용됩니다. 워크스페이스의 사용자들은 그룹으로 구성되어 있으며, 이러한 그룹은 ACL을 사용하여 데이터 접근 권한을 설정하는 데 사용됩니다.
user_ltv 테이블은 다음과 같은 스키마를 가지고 있습니다.
이메일 문자열, 나이 정수, 장기존존기간 정수
다음 뷰 정의가 실행됩니다.
감사 그룹의 구성원이 아닌 분석가가 다음 쿼리를 실행합니다.
SELECT * FROM user_ltv_no_minors
다음 중 이 쿼리의 결과를 가장 잘 설명하는 문장은 무엇입니까?
Correct Answer: A 🗳️
Explanation: Only visible for Exams4Collection members. You can sign-up / login (it's free).
데이터 엔지니어링 팀은 고객 데이터 삭제(잊혀질 만한 데이터) 요청을 처리하는 작업을 구성했습니다. 삭제해야 할 모든 사용자 데이터는 기본 테이블 설정을 사용하여 Delta Lake 테이블에 저장됩니다.
팀은 지난주 삭제된 모든 데이터를 매주 일요일 새벽 1시에 일괄 처리하기로 결정했습니다. 이 작업의 총 소요 시간은 1시간 미만입니다. 또한 매주 월요일 새벽 3시에는 일괄 작업이 조직 전체의 Delta Lake 테이블에 대해 일련의 VACUUM 명령을 실행합니다.
준법감시 담당자는 최근 Delta Lake의 타임 트래블 기능에 대해 알게 되었습니다. 담당자는 이 기능으로 인해 삭제된 데이터에 계속 접근할 수 있을 가능성을 우려하고 있습니다.
모든 삭제 로직이 올바르게 구현되었다고 가정할 때, 다음 중 이 문제를 정확하게 해결하는 문장은 무엇입니까?
Correct Answer: C 🗳️
Explanation: Only visible for Exams4Collection members. You can sign-up / login (it's free).
데이터 엔지니어가 Databricks 간 데이터 전송 시나리오에서 읽기 성능을 최적화하기 위해 델타 공유(Delta Sharing)를 구성하고 있습니다. 수신자는 공유된 판매 데이터에 대해 타임 트래블 쿼리와 스트리밍 읽기를 수행해야 합니다. 이러한 기능을 활성화하면서 최적의 성능을 제공하는 구성은 무엇일까요?
Correct Answer: B 🗳️
Explanation: Only visible for Exams4Collection members. You can sign-up / login (it's free).
데이터 엔지니어가 Lakeflow Spark Declarative Pipelines를 사용하여 고객 데이터 파이프라인을 구축하고 있습니다. 소스는 고객 레코드의 삽입, 업데이트 및 삭제 정보를 포함하는 클라우드 기반 이벤트 스트림이며, 데이터 보존 기간이 제한되어 있습니다. 이러한 변경 사항은 `AUTO CDC INTO` 구문을 사용하여 적용되며, 대상 테이블은 `customer_dim`이라는 SCD Type 1 테이블로 유지됩니다. 데이터 엔지니어는 `customer_dim` 테이블에서 데이터를 스트리밍하여 업데이트 및 삭제 이벤트만 처리하고 데이터를 점진적으로 처리하는 다운스트림 작업을 어떻게 구축해야 할까요?
Correct Answer: B 🗳️
Explanation: Only visible for Exams4Collection members. You can sign-up / login (it's free).
데이터 엔지니어가 데이터브릭스(Databricks)에서 데이터 도착이 지연되는 경우가 흔한 카프카(Kafka) 스트림의 레코드를 처리하는 파이프라인을 설계하고 있습니다. 이 경우 어떤 접근 방식을 사용해야 할까요?
Correct Answer: C 🗳️
Explanation: Only visible for Exams4Collection members. You can sign-up / login (it's free).
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