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Databricks Certified-Data-Engineer-Professional Exam Syllabus Topics:

SectionObjectives
Topic 1: Ensuring Data Security and Compliance- Compliance
  • 1. Implement pipelines that detect and mask personally identifiable information
    • 2. Develop data purging solutions according to data retention policies
      - Data Security
      • 1. Apply anonymization and pseudonymization techniques
        • 2. Use ACLs to secure workspace objects and enforce least privilege
          • 3. Use row filters and column masks for sensitive data
            Topic 2: Monitoring and Alerting- Monitoring
            • 1. Use Query Profiler and Spark UI to monitor workloads
              • 2. Use system tables for resource, cost, audit, and workload monitoring
                • 3. Use Lakeflow Spark Declarative Pipelines event logs for monitoring
                  • 4. Use Databricks REST APIs and CLI for monitoring jobs and pipelines
                    - Alerting
                    • 1. Configure Lakeflow Jobs notifications for job status and performance issues
                      • 2. Use SQL Alerts for data quality monitoring
                        Topic 3: Developing Code for Data Processing using Python and SQL- Using Python and Tools for Development
                        • 1. Develop User-Defined Functions using Pandas/Python UDFs
                          • 2. Manage and troubleshoot third-party library installations and dependencies
                            • 3. Design and implement scalable Python project structures optimized for Databricks Asset Bundles
                              - Building and Testing ETL Pipelines
                              • 1. Configure environments, dependencies, memory, and retry behavior
                                • 2. Create and automate ETL workloads using Jobs through UI, APIs, and CLI
                                  • 3. Develop unit and integration tests for data processing code
                                    • 4. Compare streaming tables and materialized views
                                      • 5. Build production-ready batch and streaming pipelines using Lakeflow Spark Declarative Pipelines and Auto Loader
                                        • 6. Compare Spark Structured Streaming and Lakeflow Spark Declarative Pipelines
                                          • 7. Use control flow operators in pipeline components
                                            • 8. Use APPLY CHANGES APIs for change data capture
                                              Topic 4: Debugging and Deploying- Deploying CI/CD
                                              • 1. Integrate Git-based CI/CD workflows using Databricks Git Folders
                                                • 2. Build and deploy Databricks resources using Databricks Asset Bundles
                                                  - Debugging and Troubleshooting
                                                  • 1. Use Lakeflow Spark Declarative Pipelines event logs and Spark UI for debugging
                                                    • 2. Analyze errors and remediate failed job runs
                                                      • 3. Use Spark UI, cluster logs, system tables, and query profiles for diagnostics
                                                        Topic 5: Data Transformation, Cleansing, and Quality- Advanced Data Transformation
                                                        • 1. Write efficient Spark SQL and PySpark transformations
                                                          • 2. Apply window functions, joins, and aggregations to large datasets
                                                            - Data Quality
                                                            • 1. Apply data quality controls using Lakeflow Spark Declarative Pipelines or Auto Loader
                                                              • 2. Develop data quarantining processes for invalid data
                                                                Topic 6: Data Ingestion & Acquisition- Design and implement data ingestion pipelines
                                                                • 1. Build append-only pipelines for batch and streaming data using Delta
                                                                  • 2. Ingest Delta Lake, Parquet, ORC, Avro, JSON, CSV, XML, Text, and Binary data
                                                                    • 3. Ingest data from message buses and cloud storage
                                                                      Topic 7: Data Governance- Unity Catalog Permissions
                                                                      • 1. Understand the Unity Catalog permission inheritance model
                                                                        - Metadata and Discoverability
                                                                        • 1. Create and maintain descriptions and metadata for enterprise data
                                                                          Topic 8: Data Modelling- Scalable Data Models
                                                                          • 1. Design and implement scalable data models using Delta Lake
                                                                            • 2. Understand Liquid Clustering versus partitioning and Z-Ordering
                                                                              • 3. Optimize data layout using Liquid Clustering
                                                                                - Dimensional Modelling
                                                                                • 1. Design dimensional models for analytical workloads
                                                                                  Topic 9: Cost & Performance Optimisation- Delta Optimization
                                                                                  • 1. Use Change Data Feed to address streaming table limitations and improve latency
                                                                                    • 2. Apply data skipping and file pruning techniques
                                                                                      • 3. Understand deletion vectors and liquid clustering
                                                                                        - Cost Optimization
                                                                                        • 1. Understand how Unity Catalog managed tables reduce operational overhead
                                                                                          - Query Performance
                                                                                          • 1. Identify inefficient joins and excessive data shuffling
                                                                                            • 2. Use Query Profile to identify performance bottlenecks
                                                                                              Topic 10: Data Sharing and Federation- Lakehouse Federation
                                                                                              • 1. Configure Lakehouse Federation with appropriate governance
                                                                                                - Delta Sharing
                                                                                                • 1. Configure Databricks-to-Databricks Sharing
                                                                                                  • 2. Configure sharing with external platforms using the open sharing protocol
                                                                                                    • 3. Share live Lakehouse data with external computing platforms

                                                                                                      Databricks Certified Data Engineer Professional Sample Questions:

                                                                                                      Question #1

                                                                                                      A data engineer needs to design an efficient pipeline that automatically processes new CSV files as they arrive in S3 storage. Which Databricks feature should the data engineer use to meet these requirements?

                                                                                                      • A. COPY INTO SQL command with parameters to track processed files
                                                                                                      • B. Traditional batch processing with scheduled Databricks Jobs
                                                                                                      • C. Auto Loader with schema inference and evolution enabled
                                                                                                      • D. Streaming from cloud storage using standard Spark readStream with format ("csv") and format ("json")
                                                                                                      Reveal Solution  Discussion  0

                                                                                                      Correct Answer: C  🗳️

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                                                                                                      Question #2

                                                                                                      A data engineer is designing a system to process batch patient encounter data stored in an S3 bucket, creating a Delta table (patient_encounters) with columns encounter_id, patient_id, encounter_date, diagnosis_code, and treatment_cost. The table is queried frequently by patient_id and encounter_date, requiring fast performance. Fine-grained access controls must be enforced. The engineer wants to minimize maintenance and boost performance. How should the data engineer create the patient_encounters table?

                                                                                                      • A. Create an external table in Unity Catalog, specifying an S3 location for the data files. Enable predictive optimization through table properties, and configure Unity Catalog permissions for access controls.
                                                                                                      • B. Create a managed table in Unity Catalog. Configure Unity Catalog permissions for access controls, and rely on predictive optimization to enhance query performance and simplify maintenance.
                                                                                                      • C. Create a managed table in Hive Metastore. Configure Hive Metastore permissions for access controls, and rely on predictive optimization to enhance query performance and simplify maintenance.
                                                                                                      • D. Create a managed table in Unity Catalog. Configure Unity Catalog permissions for access controls, schedule jobs to run OPTIMIZE and VACUUM commands daily to achieve best performance.
                                                                                                      Reveal Solution  Discussion  0

                                                                                                      Correct Answer: B  🗳️

                                                                                                      Explanation: Only visible for Easy4Engine members. You can sign-up / login (it's free).

                                                                                                      Question #3

                                                                                                      The view updates represents an incremental batch of all newly ingested data to be inserted or updated in the customers table.
                                                                                                      The following logic is used to process these records.

                                                                                                      Which statement describes this implementation?

                                                                                                      • A. The customers table is implemented as a Type 3 table; old values are maintained as a new column alongside the current value.
                                                                                                      • B. The customers table is implemented as a Type 2 table; old values are overwritten and new customers are appended.
                                                                                                      • C. The customers table is implemented as a Type 0 table; all writes are append only with no changes to existing values.
                                                                                                      • D. The customers table is implemented as a Type 2 table; old values are maintained but marked as no longer current and new values are inserted.
                                                                                                      • E. The customers table is implemented as a Type 1 table; old values are overwritten by new values and no history is maintained.
                                                                                                      Reveal Solution  Discussion  0

                                                                                                      Correct Answer: D  🗳️

                                                                                                      Question #4

                                                                                                      A junior data engineer has configured a workload that posts the following JSON to the Databricks REST API endpoint 2.0/jobs/create.

                                                                                                      Assuming that all configurations and referenced resources are available, which statement describes the result of executing this workload three times?

                                                                                                      • A. Three new jobs named "Ingest new data" will be defined in the workspace, and they will each run once daily.
                                                                                                      • B. Three new jobs named "Ingest new data" will be defined in the workspace, but no jobs will be executed.
                                                                                                      • C. One new job named "Ingest new data" will be defined in the workspace, but it will not be executed.
                                                                                                      • D. The logic defined in the referenced notebook will be executed three times on new clusters with the configurations of the provided cluster ID.
                                                                                                      • E. The logic defined in the referenced notebook will be executed three times on the referenced existing all purpose cluster.
                                                                                                      Reveal Solution  Discussion  0

                                                                                                      Correct Answer: B  🗳️

                                                                                                      Explanation: Only visible for Easy4Engine members. You can sign-up / login (it's free).

                                                                                                      Question #5

                                                                                                      What is the first line of a Databricks Python notebook when viewed in a text editor?

                                                                                                      • A. # Databricks notebook source
                                                                                                      • B. // Databricks notebook source
                                                                                                      • C. -- Databricks notebook source
                                                                                                      • D. %python
                                                                                                      • E. # MAGIC %python
                                                                                                      Reveal Solution  Discussion  0

                                                                                                      Correct Answer: A  🗳️

                                                                                                      Explanation: Only visible for Easy4Engine members. You can sign-up / login (it's free).

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