Geraldo Maia focused on enhancing data integrity within the prefeitura-rio/queries-rj-iplanrio repository by addressing a data type consistency issue in the SMFP Sigma System’s YAML configuration files. He applied his skills in configuration management and data modeling to update field definitions, ensuring accurate handling of dates, quantities, prices, and codes across both configuration files and models. Working primarily with YAML, Geraldo validated changes throughout the repository to prevent misinterpretation of numeric and decimal values, thereby reducing the risk of downstream data ingestion errors. His targeted fix improved the reliability of reporting and maintained consistency across the system’s data pipelines.