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Modelo entidad relación

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Mind Map on Modelo entidad relación, created by lydaza7 on 18/02/2014.
lydaza7
Mind Map by lydaza7, updated more than 1 year ago
lydaza7
Created by lydaza7 over 10 years ago
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Resource summary

Modelo entidad relación
  1. Entidades
    1. representa una cosa o objeto
    2. Atributos
      1. definen un objeto
        1. Simples
          1. Compuestos
            1. multivaloradas
              1. Derivados
                1. Se dividen en
                2. Relacion
                  1. asociación entre entidades
                  2. Cardinalidad
                    1. Expresa
                      1. Numero de asociaciones con otras entidades
                        1. 1:1
                          1. 1:N
                            1. N:1
                              1. N:M
                          2. Clave
                            1. Permite Identificar
                              1. Un conjunto de atributos
                              2. Primaria
                                1. Foranea
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