Wael Halabi developed a data quality improvement feature for the CityofToronto/bdit_data-sources repository, focusing on flows data classification. He implemented a SQL script that updates the includes_contraflow flag in the flows_unfiltered table, classifying each site and direction as TRUE or FALSE based on the presence of single or multiple flows. This approach remediated all NULL values according to defined rules, ensuring consistent and reliable downstream analysis. By leveraging SQL scripting and database management skills, Wael enhanced data integrity within the ecocounter database, reducing the need for manual data wrangling and supporting more accurate business intelligence reporting.