WWW SQL Designer is an open-source, web-based database structure design tool, positioned like a lightweight ER/modeling tool. It can be used in a browser to draw tables, fields, and relationships, and to export or save SQL/XML design files.

It is suitable for self-hosting and usually requires only a web server and a PHP environment. Resource usage depends on concurrency and project size. Users in China need to handle Chinese fonts, encoding, intranet access, and backups themselves; the available material does not show dedicated adaptation for the WeChat ecosystem or domestic cloud providers.