erwin once had a “Navigator Edition” (read-only). It’s discontinued. However, for learning, the trial is best.
Una herramienta web gratuita y ágil para diseñar esquemas de bases de datos escribiendo código simple. descargar erwin data modeler 9.7 full gratis archive
The official erwin Data Modeler 9.7 Download Page provides access to the 64-bit installers for the Standard, Workgroup, and Academic editions (approx. 595 MB). erwin once had a “Navigator Edition” (read-only)