create-stm

Source-to-target mapping documents for medallion ETL pipelines can be generated automatically as standardized Excel workbooks. This eliminates manual mapping document creation by validating upstream data model specifications against actual source database metadata to produce build-ready artifacts.

An STM workbook for bronze, silver, and gold data layers includes eight standardized sheets covering Summary, Source-to-Bronze, Bronze-to-Silver, Silver-to-Gold, Code Systems, Null Handling, Edge Cases, and full column-level Lineage documentation.

Column lineage documentation for ETL pipelines is automated by generating Excel workbooks that map transformations across medallion architecture layers. The generated workbook captures full column-level lineage, transformation logic, and SCD rules directly from approved specifications.

Approved upstream artifacts including DRD, HLD, and DMS documents are required before creating source-to-target mappings. The generation process enforces an approval gate and verifies actual source database schema and data patterns to prevent mapping assumptions.

Using openpyxl, ETL documentation is standardized across multiple data pipelines by generating compliant Excel workbooks. This ensures consistent mapping artifacts that include null handling rules, code system mappings, and edge case handling for ETL and ELT implementation.

The best way to document SCD rules and null handling for ETL pipelines is generating a standardized STM workbook. It captures transformation logic, SCD rules, code system mappings, and edge case handling consistently within dedicated Excel sheets for build-ready traceability.