156
data lineage
Which inputs produced this number. If you cannot say, you cannot fix the dashboard.
What is data lineage?
Lineage is the graph from source to table to metric. It includes the job and the version of the code. A number nobody can trace is a rumor.
Why does data lineage matter when vibe coding?
Models create `metrics_final_v3` from a query pasted into a scheduler. Next month nobody knows which v3. Name the graph in the repo.
How do you do data lineage?
Each published table lists its inputs and the job that builds it. Prefer a tool or a header in the SQL file over a wiki. A metric names the table it sums.
How do you ask a model for data lineage?
Record lineage for (table): source tables and the job name in the repo. Do not create a derived table without stating inputs. The dashboard metric must point at one table.
What goes wrong with data lineage?
Lineage that is a slide from last quarter. If it is not generated from the jobs, it is already wrong.