Topic
Data Quality
4 posts tagged “Data Quality”.
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Twelve Queries That Pass Every Schema Check and Still Return the Wrong Number
A query can be syntactically valid, reference only real tables and columns, run without error, and still return a wrong business number. The Semantic…
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Data Quality Tooling Compared: Great Expectations, Soda, dbt Tests, and Anomaly Detection
A revenue dashboard shows a 40 percent drop for yesterday. Every pipeline reported success. Every dbt test passed. The orders table has a fresh…
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Goal-Directed Data Quality Agents: Anomaly Quarantine on Apache Iceberg
Every data platform has a quality system, and most of them are the same system: a few hundred rules, written after incidents, checking the failures…
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Freshness Is a Contract, Not a Note on a Dashboard
An inventory agent rerouted a shipment last quarter for a company I spoke with, based on stock levels that were six hours old. The warehouse had…