
SQL
Authored by Bartolo Rosa
Instructional Technology, Professional Development
Professional Development
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una sentencia SELECT sin la cláusula WHERE devuelve
Todos los registros existentes en la tabla que no estén relacionados con otra tabla
Todos los registros existentes en la tabla
No se puede ejecutar una sentencia SELECT sin la cláusula WHERE
Las anteriores respuestas no son correctas
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿En cuál de las siguientes sentencias del lenguaje SQL se emplea la cláusula SET?
Delete
drop
select
update
3.
MULTIPLE SELECT QUESTION
30 sec • Ungraded
En SQL, para eliminar las filas duplicadas del resultado de una sentencia SELECT se emplea
Drop
Delete
Distinct
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En SQL, ¿cuál de estas sentencias añade una fila a una tabla en una base de datos?
insert
Add
include
Into
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En SQL, para modificar la estructura de una tabla de una base de datos se emplea la instrucción
ALTER TABLE
CHANGE TABLE
MODIFY TABLE
Las anteriores respuestas no son correctas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué instrucción se emplea para eliminar todo el contenido de una tabla, pero conservando la tabla?
DELETE TABLE
DROP TABLE
TRUNCATE TABLE
Las anteriores respuestas no son correctas
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes no es una función de agregación?
Count()
limit()
max()
min()
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