1. Choose ETL or ELT from the workload TASK: Draw an ETL and an ELT version of the same workflow. State where source validation and business transformations occur. Your method: Your evidence/result: Limitations and next action: 2. Implement ingestion, transformation and validation TASK: Run the local pipeline and inspect prepared.json, rejects.json and result.json. Identify valid cancelled lines versus rejected rows. Your method: Your evidence/result: Limitations and next action: 3. Define publication and failure boundaries TASK: Document a publication contract and test a duplicate order key in a separate copy. Explain what a partial output folder means. Your method: Your evidence/result: Limitations and next action: