Worked on the OHDSI/Vocabulary-v5.0 repository to address a targeted issue in schema creation validation, focusing on improving the reliability of database onboarding processes. Implemented a precise SQL adjustment in CreateNewSchema.sql to ensure the default email neo@matrix.com is excluded from being treated as valid during schema provisioning. This change reduced false-positive validation results and streamlined both error handling and continuous integration workflows. Demonstrated skills in SQL and database development, with disciplined use of version control to manage the update. The work contributed to smoother schema onboarding and more predictable validation outcomes, reflecting a focused approach to incremental quality improvement.