# A growth team owns four new sources to ingest: an internal Postgres orders database, a Kafka clickst Canonical URL: Domain: Pipeline Design ยท Difficulty: medium ## Problem A growth team owns four new sources to ingest: an internal Postgres orders database, a Kafka clickstream topic, an SFTP directory where a partner drops daily CSVs, and a Stripe REST API. The section names four ingestion shapes, sorted by who initiates the transfer (pipeline-pull or source-push) and what kind of artifact moves (events or bulk row sets/files): pull, push, file drop, and API. Match the source by adding an ingestion-shape annotation to each source on the canvas: each source's name should state which of the four shapes it uses and what state the pipeline must track to resume after a crash (watermark, offset, processed-file manifest, or cursor). ## Related - [All practice problems](https://datadriven.io/problems) - [Mock interview mode](https://datadriven.io/interview/a-growth-team-owns-four-new-sources-to-ingest-an-internal-p-fd788ecc) - [System Design Interview Questions](https://datadriven.io/data-engineering-system-design) - [Data Engineering Interview Prep Guide](https://datadriven.io/data-engineer-interview-prep) - [Daily Challenge](https://datadriven.io/daily) --- Source: DataDriven (https://datadriven.io). 100% free data engineering interview prep. Live code execution against Postgres 16, Python 3.11, and Spark sandboxes. No paywall, no premium tier, no signup gate.