"Archivo de Descarga 900.7z" is not a recognized cultural phenomenon, specific software package, or historical artifact. In Spanish, the name translates literally to
7-Zip is chosen when the creator needs to shrink large files (like a database) more efficiently than standard .zip .
Many technical support sites or government portals (such as those in Mexico or Spain) use "Archivo de Descarga" followed by a numbering system for internal database management.
If you have downloaded this file and are unsure of its origin, Use a service like VirusTotal to scan the archive or the URL where you found it. To provide a "deep essay" on the actual contents, I would