This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
In this episode you will learn:
- How reference queries maintain parent-child lineage and automatically inherit upstream transformations in Power Query.
- Why duplicate queries create independent M code scripts without ongoing dependencies or automatic updates from the original query.
- Best practices for staging queries, including disabling load and referencing staging tables to build star schema fact and dimension tables.
- Common PL-300 exam traps involving breaking changes in upstream queries and maintenance overhead in duplicated pipelines.
- The mental shortcut Reference Remembers, Duplicate Disconnects to quickly solve query architectural scenarios on exam day.
For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
