Abhiraaj worked on the frappe/frappe repository, focusing on backend development and database management using Python. During the month, he addressed a complex issue in the database query engine related to permission checks across parent-child table relationships, excluding Single DocTypes. By refining the SQL join logic, he ensured that permission conditions referencing parent tables were correctly enforced for child tables, thereby preventing unintended data exposure. His work improved the reliability and correctness of permission evaluation, directly impacting data security and compliance. The solution involved ORM debugging, code review, and cross-repository collaboration, demonstrating depth in backend systems and secure data handling.