
Cuestionario SQL
Authored by Miguel Martinez
Computers
11th Grade
Used 1+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué componentes forman parte del lenguaje SQL?
HTML, CSS, JavaScript
DML, HTML, JSON
Windows, Linux, MacOS
LDD, LMD, integridad, vistas, control de transacciones, autorización
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué operador en SQL se utiliza para unir los resultados de dos consultas eliminando duplicados?
JOIN
GROUP BY
SELECT
UNION
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la utilidad del comando CREATE INDEX en SQL?
Eliminar una tabla
Actualizar valores duplicados
Crear una vista
Crear un índice para agilizar búsquedas
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la función del comando GRANT en SQL?
Actualizar contraseñas
Insertar datos
Eliminar usuarios
Dar privilegios a usuarios
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué tipo de índice se usa cuando los datos están agrupados por un atributo no clave?
Índice de agrupamiento
Índice compuesto
Índice simple
Índice primario
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué palabra clave se utiliza en SQL para eliminar valores duplicados en funciones de agregación?
HAVING
DISTINCT
GROUP BY
ORDER BY
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es el propósito principal de las vistas en SQL?
Mejorar el rendimiento
Codificar funciones
Personalizar el acceso a los datos
Reducir el tamaño de las tablas
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