Will this logic still work if the underlying data schema changes?

If the underlying schema changes—such as adding a new column or renaming a key—the logic that depends on those columns must be updated. The core algorithm may still work, but any hard‑coded column references, joins, or assumptions about data types will break. To make the logic resilient, abstract the schema into a metadata layer, use dynamic SQL or parameterized queries, and include schema validation steps before execution. This way, the logic can adapt to schema evolution without manual code changes.