
UF1888_modelo_datos_sql_workbench
Authored by Maria Ledesma
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Professional Development
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33 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de los siguientes es un modelo de datos?
Modelo de software
Modelo relacional
Modelo de red
Modelo de red y Modelo relacional
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué es una clave primaria?
Un atributo que contiene datos duplicados.
Un atributo que puede ser nulo.
Un atributo único que identifica un registro en una tabla.
Un atributo que se utiliza para establecer relaciones.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes es una sentencia SQL para seleccionar datos?
SELECT
INSERT INTO
UPDATE
DELETE
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué tipo de relación puede existir entre dos tablas en un modelo de datos?
Muchos a muchos
Uno a uno
Uno a muchos
Todas las anteriores
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué representa un diagrama entidad-relación?
El flujo de un programa.
La estructura de una base de datos.
Los procedimientos de un sistema
Las interfaces de usuario
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la sintaxis correcta para insertar un registro en una tabla llamada "clientes"?
INSERT clientes VALUES (1, 'Juan');
INSERT INTO clientes (id, nombre) VALUES (1, 'Juan');
INSERT clientes (id, nombre) VALUES (1, 'Juan');
INSERT INTO clientes (1, 'Juan');
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué sentencia se usa para eliminar un registro de una tabla?
REMOVE
DELETE
DROP
CLEAR
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