* ej 4
[[https://fedesrv.ddns.net/git/fede/2024-1/raw/branch/main/Bases%20de%20Datos/ej4.png]]
* ej 5
[[https://fedesrv.ddns.net/git/fede/2024-1/raw/branch/main/Bases%20de%20Datos/ej5.png]]