Data Modeling in the Wild: A Corpus of Data Model Diagrams from Public GitHub Repositories

This dataset contains a large-scale corpus of data model diagrams collected from public GitHub repositories. It includes both: - Text-based diagrams written in PlantUML or Mermaid syntax, which were rendered into image format - Image-based diagrams, such as screenshots or photos of informal sketches and models. The dataset was compiled to support computational and qualitative analysis of how developers conceptualize and represent data models across different levels of formality. It will enable researchers to explore patterns, structures, and tool usage in modeling practices, offering insights into real-world diagramming behavior in software development contexts.