Developed comprehensive technical documentation for hierarchical data modeling in MySQL, focusing on the Closure Table approach and its practical applications. The work, contributed to the Kernel360/blog repository, included a detailed comparison of Closure Table with Adjacency List, Materialized Path, and Nested Set models, providing SQL schema definitions and example queries for managing hierarchical data. Leveraging SQL and technical writing skills, the documentation offered clear guidance on adding and retrieving data, supporting faster adoption by engineering teams. Markdown and Mermaid were used to structure and visualize the content, resulting in a resource that deepened the repository’s knowledge base for database design.