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BD1: ER
Quiz
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Science
•
University
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Practice Problem
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Medium
Joel Flores Escalante
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20 questions
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1.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
Se describe como un objeto que existe y se distingue de otros.
Entidad
Atributo
Instancia
Relación
2.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
Representan las propiedades o cualidades de los objetos:
Entidad
Atributo
Instancia
Relación
3.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
Cuando se desconoce el valor de un atributo o no esta definido se conoce como:
Multivaluado
Compuesto
Derivado
Nulo
4.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
El conjunto de valores permitidos para cada atributo se llama: Rango
Verdadero
Falso
5.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
Cuando un atributo tiene más de un valor se conoce como:
Multivaluado
Nulo
Compuesto
Derivado
6.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
Cuando un atributo se puede dividir en otros más pequeños:
Multivaluado
Nulo
Compuesto
Derivado
7.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
Atributos cuyo valor se puede calcular cuando se necesario:
Nulo
Derivado
Multivaluado
Compuesto
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