Add example DAG for ERP data migration pipeline (ETL workflow)

[venkatamandavilli-code]

Summary

This PR adds an example DAG demonstrating a typical ERP data migration workflow using Apache Airflow.

Details

The DAG models a structured ETL pipeline commonly used in enterprise ERP transformations:

• Data extraction from legacy systems
• Data validation (completeness and accuracy checks)
• Data transformation to target schema
• Data loading into target system
• Post-load reconciliation

Use Case

This example is intended to help users understand how Airflow can be used to orchestrate complex enterprise data migration workflows, especially in ERP environments.

Notes

This is a simplified illustrative example based on real-world enterprise migration patterns.

[boring-cyborg]

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[venkatamandavilli-code]

Thank you for reviewing my contribution.

Please let me know if any modifications or improvements are required. I would be happy to update the PR accordingly.

[venkatamandavilli-code]

Updated the example DAG with additional documentation and function-level descriptions to clarify that this is an illustrative ERP migration workflow example.

[potiuk]

@venkatamandavilli-code A few things need addressing before review — see our Pull Request quality criteria.

• ❌ Pre-commit / static checks — Failing: Basic tests / Static checks: basic checks only. See docs.

Note: Your branch is 146 commits behind main. Please rebase and push again to get up-to-date CI results.

No rush.

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Note: This comment was drafted by an AI-assisted triage tool and may contain mistakes. Once you have addressed the points above, an Apache Airflow maintainer — a real person — will take the next look at your PR. We use this two-stage triage process so that our maintainers' limited time is spent where it matters most: the conversation with you.

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Drafted-by: Claude Code (Opus 4.7); reviewed by @potiuk before posting

[venkatamandavilli-code]

Thanks for the guidance. I’ll update the branch and review the static check failure before pushing the correction.

Appreciate the feedback.