erwin once had a “Navigator Edition” (read-only). It’s discontinued. However, for learning, the trial is best.
erwin 9.7 lacks built-in drivers for newer database versions (e.g., SQL Server 2022, Oracle 23c). Even if you get a pirate copy, you may not reverse-engineer your current database. descargar erwin data modeler 9.7 full gratis archive
If you are a student or teacher, request an Academic License through your institution. Many universities have agreements with erwin/Quest. erwin once had a “Navigator Edition” (read-only)