
Lenguaje de Definición de Datos
Authored by Elvia Rodríguez Nieto
Computers
University
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antes de crear una tabla, se debe diseñar su estructura, la cual implica:
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Las restricciones de columnas son utilizadas para:
Hacer cumplir las reglas de negocio
Implementar la integridad en la información a nivel de tabla
Todas las opciones
Niguna opción
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Una restricción Default es:
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La palabra reservada RERERENCES identifica:
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Alter table se usa para:
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los tipos de restricciones comunes entre los SGBD son:
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Una restricción PRIMARY KEY es:
Campo o conjunto de campos que identifican de manera única a un registro.
Campo que permite valores nulos
Campo que tiene un indice
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