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            <dia:string>#DATOS

REVISTA
IDR             NOMBRE
NG              NATIONAL GEOGRAPHIC
NT               NATURE
...

AÑO
IDR     AÑO
NG     1968
NT      1968
NG      1969

PUBLICACION
IDR AÑO  NUMERO FECHA
NG  1968  1            15/01/1968
NT   1968  1            01/01/1968
NG   1969  1            05/01/1969


MODELO LOGICO RELACIONAL

REVISTA(IDR,NOMBRE)
    PK(IDR)
AÑO(IDR,AÑO)
    PK(IDR,AÑO)
    FK(IDR,REVISTA)
PUBLICACION(IDR,AÑO,NUMERO,FECHA)
    PK(IDR,AÑO,NUMERO)
    FK(IDR,AÑO,AÑO)

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