Suppose you need to ingest data from an API service into a data lake, build a medallion architecture data bridge, and then make it available for API consumption in tabular form. How would you approach this typical data ingestion and data modeling exercise?
π‘ Model Answer
First, I define the API contract and schedule a data extraction job (e.g., using Airflow or Azure Data Factory). Raw JSON responses are stored in a bronze layer of the data lake. Next, I create a silver layer where I parse the JSON, flatten nested structures, and apply data quality rules (null checks, type casting). I then build a medallion architecture: bronze (raw), silver (cleaned), gold (aggregated). The data bridge is implemented with dbt models that join silver tables into a unified schema suitable for analytics. Finally, I expose the gold tables through a REST API (e.g., using FastAPI) or a BI connector, ensuring the output is tabular and paginated. Throughout, I maintain lineage, versioning, and automated tests to guarantee consistency and reliability.
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