Did you ever think about how you can have a sample data to start build your ETL in meantime you don’t have access to the database?
Imagine the following scenario,
You’re a Europe(an) database administrator and you have received new requirements to build a new report. You found that the required data is located at China and your connection is actually strictly limited due security restrictions on both countries.
The integration will be something as I illustrate on the below figure.
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