What is model extensibility?

< 1 min read

Model extensibility means the data model can easily accommodate new business requirements without major redesign.
For example, if the business introduces a new product category, we should add it to the existing Product dimension without changing the fact structure.
In one project, we added a new sales channel (Mobile App) by extending the Channel dimension.
Because we had a proper star schema, we didn’t need to modify existing reports.
We just inserted new dimension records and updated ETL logic.
Extensibility also means we can add new attributes or new fact tables smoothly.
The goal is to minimize impact on existing dashboards and downstream systems.

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