Validate Early, Validate OftenSource System Data QualityData Ingestion RisksEnabling Data Analyst ValidationA Simple Validation FrameworkValidator Framework CodeStructure of a Validation TestRunning a Validation TestUsage in an Airflow DAGWhen to Halt a Pipeline, When to Warn and ContinueExtending the FrameworkValidation Test ExamplesDuplicate Records After IngestionUnexpected Change in Row Count After IngestionMetric Value FluctuationsCommercial and Open Source Data Validation Frameworks