CREATE TABLE coordinacion (
idcoord int(11) NOT NULL,
nomcoord varchar(50) NOT NULL,
ubicacion varchar(20) NOT NULL,
CONSTRAINT pk_coordinacion primary key(idcoord)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

CREATE TABLE nucleo_academico (
idnucleo int(11) NOT NULL,
nomnucleo varchar(150) NOT NULL,
CONSTRAINT pk_nucleo_academico primary key(idnucleo)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

CREATE TABLE ocupa(
idcoord int(11) NOT NULL,
idnucleo int(11) NOT NULL,
foreign key(idcoord) REFERENCES coordinacion(idcoord),
foreign key(idnucleo) REFERENCES coordinacion(idnucleo),
primary key(idcoord,idnucleo)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;