Escribe la sentencia que añade el atributo acompañar_accompany a la tabla HUESPE...
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Escribe la sentencia que añade el atributo acompañar_accompany a la tabla HUESPED_GUEST, como una referencia al atributo dni_idcard VARCHAR(9). Así la fila ('9','Huesped_Guest9',NULL,'1') significa que el HUESPED_GUEST con dni_idcard='9' acompañó al HUESPED_GUEST con dni_idcard='1' en una ocasión.Write the statement that adds the attribute acompañar_accompany to the table HUESPED_GUEST, referencing the attribute dni_idcard VARCHAR(9) of the same table HUESPED_GUEST. So, the row ('9','Huesped_Guest9',NULL,'1') means that the HUESPED_GUEST, with dni_idcard='9' has accompanied to the HUESPED_GUEST with dni_idcard='1' once.
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