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What is data lineage, and how do you capture it across a pipeline at table and column level?

When a metric looks wrong, lineage tells you which upstream table to blame. The signal is distinguishing table vs column lineage and knowing the three ways to capture it: SQL parsing, runtime hooks, and metadata APIs.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

When a metric looks wrong, lineage tells you which upstream table to blame. The signal is distinguishing table vs column lineage and knowing the three ways to capture it: SQL parsing, runtime hooks, and metadata APIs.

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