Data lineage is visibility into where data came from, how it was transformed, and where it moved across systems.
Category
Data Governance
Also known as
lineage
It matters for trust and auditability: when a number is wrong, or when a regulator asks, lineage is how you trace it. It is increasingly required for AI accountability.
In practice
If you cannot explain where a profile attribute came from, you cannot defend a decision made from it. Lineage is what makes that answerable.
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