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21714011_25_26_01 - BASES DE DATOS

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Deseamos migrar el contenido de la relación R a las relaciones R1 y R2 para atender a las siguientes restricciones. ¿Qué pasos deben realizarse?

R(cod_emp, nombre_emp, cod_proy, horas)

  • DF1: cod_emp → nombre_emp
  • DF2: cod_emp, cod_proy → horas

R1(cod_emp, nombre_emp)

R2(cod_emp, cod_proy, horas) R2.cod_emp es CF de R1.cod_emp

 

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Si en nuestra Base de Datos tenemos 10 empleados, podemos afirmar que:

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