Diagnóstica TBD
Authored by KARLA JIMENEZ
Professional Development
University
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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Son objetos tangibles o intangibles que existen en el mundo real que son importantes para el contexto que se estudia
Relación
Cardinalidad
Entidad
Atributo
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Es la asociación de dos o más entidades en el contexto estudiado.
Entidad
Cardinalidad
Relación
Atributo
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Es proceso de refinamiento del diseño de la base de datos cuyo propósito es evitar redundancias innecesarias
Modelo entidad relación
Modelo relacional
Normalización
Creación de base de datos
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
De la siguiente lista selecciona las características de las llaves primarias en el modelo relacional
Acepta Nulos
Acepta valores repetidos
No acepta nulos
Sus valores no se repiten
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Al convertir el diagrama E-R al relacional la regla nos dice que las entidades se convierten en:
Tablas
Campos
Llaves primarias
Llaver foráneas
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Al convertir un diagrama E-R al relacional las relaciones se convierten de acuerdo a:
La cantidad de atributos que contienen
La cardinalidad de la relación
La llave primaria
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
De acuerdo al diagrama cada empleado puede tener sólo una dirección asociada.
Verdadero
Falso
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