For Dominican what?
Did you forget the "s" and the capitol D?
You have a snowball's chance in he!! of getting a visa for any Dominican citizen that has not got a very well paying job, a solid bank account and significant property. They don't want and don't need more people living off the dole.
Of course you can have the person apply to the Spanish Consulate for a work visa, as they have an on-going program to provide a few hundred jobs for Dominicans each year. The jobs are in domestic service and other labor intensive areas. Pay is much better than comparable work in the DR. But then again, that is probably not the area your "friend" is accustomed to.
HB