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| Section | Objectives |
|---|---|
| Data Modeling and Transformation | - Spark SQL transformations - Dimensional modeling concepts - Performance optimization techniques |
| Data Ingestion and Processing | - Batch and streaming ingestion with Auto Loader - Structured Streaming fundamentals - ETL pipeline design patterns |
| Production Pipelines and Orchestration | - Databricks Workflows - Job scheduling and monitoring - Error handling and recovery strategies |
| Delta Lake and Data Management | - Schema evolution and enforcement - Time travel and versioning - Delta Lake transactions and ACID properties |
| Databricks Lakehouse Platform Architecture | - Medallion architecture (Bronze, Silver, Gold) - Data governance concepts (Unity Catalog basics) - Workspace and cluster architecture |
데이터 엔지니어링 팀은 다음 코드를 유지 관리합니다.
이 코드가 논리적으로 올바른 결과를 생성하고 원본 테이블의 데이터가 중복 제거 및 유효성 검사를 거쳤다고 가정할 때, 이 코드가 실행될 때 발생하는 상황을 설명하는 문장은 무엇입니까?
Correct Answer: E 🗳️
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데이터 엔지니어가 늦게 도착하는 중복 레코드를 처리할 가능성이 있는 파이프라인을 구성하고 있습니다.
배치 내에서 레코드 중복을 제거하는 것 외에도, 다음 중 어떤 접근 방식을 사용하면 데이터 엔지니어가 델타 테이블에 데이터를 삽입할 때 이전에 처리된 레코드와 중복된 데이터를 제거할 수 있습니까?
Correct Answer: E 🗳️
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데이터 거버넌스 팀은 GDPR 준수를 위해 레코드 삭제에 사용되는 코드를 검토하고 있습니다. 그들은 Delta Lake의 users라는 테이블에서 레코드를 삭제하는 데 다음과 같은 로직이 사용된다는 것을 확인했습니다.
user_id가 고유 식별 키이고 delete_requests에 삭제를 요청한 모든 사용자가 포함되어 있다고 가정할 때, 위의 로직을 성공적으로 실행하면 삭제될 레코드에 더 이상 접근할 수 없다는 것이 보장되는지 여부를 설명하는 문장은 무엇이며, 그 이유는 무엇입니까?
Correct Answer: E 🗳️
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데이터 아키텍트는 데이터 레이크의 내장 버전 관리 및 타임 트래블 기능에 대해 알게 되었습니다. 감사 목적으로 고객 테이블에 나타나는 모든 유효한 도로명 주소를 완벽하게 유지해야 하는 요구 사항이 있습니다.
건축가는 기존 레코드를 새 값으로 덮어쓰고 Delta Lake의 타임 트래블 기능을 활용하여 장기적인 데이터 감사를 지원하는 Type 1 테이블을 구현하는 데 관심이 있습니다. 프로젝트의 데이터 엔지니어는 Type 2 테이블이 더 나은 성능과 확장성을 제공할 것이라고 생각합니다. 이 결정에 있어 어떤 정보가 핵심적일까요?
Correct Answer: D 🗳️
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새로운 Databricks 프로젝트가 시작되면 중앙 IP 팀은 Terraform과 서비스 주체를 사용하여 필요한 인프라를 프로비저닝합니다. 여기에는 Databricks 워크스페이스, 외부 위치에 연결된 Unity 카탈로그, 그리고 모든 프로젝트 팀 구성원이 포함된 Databricks 그룹 생성이 포함됩니다. 프로젝트 팀은 테이블과 볼륨과 같은 모든 자산을 Unity 카탈로그에 관리형 자산으로 저장해야 합니다. 이 모델은 인프라의 복잡성을 숨기면서 팀에게 카탈로그 내에서의 자율성을 제공합니다. 팀은 스키마, 테이블, 볼륨 및 관련 객체를 생성하고 관리할 수 있지만, 카탈로그의 이름을 바꾸거나 삭제하거나 권한을 변경할 수는 없습니다. 이러한 권한은 IT 부서에서 관리합니다. 이 모델을 구현하기 위해 프로젝트 그룹에 어떤 권한을 부여해야 할까요?
Correct Answer: C 🗳️
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