
BD-Cuestionario3
Authored by Ulises Medina
Computers
Professional Development
Used 35+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Donde se guardan los ID’s eliminados en el log de transacciones.
DELETE
TRUNCATE
REMOVE
CLEAR
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Únicamente marca las páginas que contenían los datos.
DELETE
TRUNCATE
REMOVE
CLEAR
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Selecciona cuáles comandos son DML
(Data Manipulation Language)
Lenguaje de Manipulación de Datos.
Seleccione una:
a. SELECT, INSERT, UPDATE, DELETE.
b. FROM, WHERE, GROUP BY, HAVING, ORDER BY.
c. CREATE, DROP, ALTER.
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Indica cuales son tres tipos de datos existentes:
Seleccione una:
a. VARCHAR, DATE, INT.
b. INT, VARCHAR, AVG.
c. COUNT, VARCHAR, DATE.
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
¿Para qué se utiliza el atributo UNIQUE?
Seleccione una:
a. Se utiliza para devolver el número de registros de la selección.
b. Se utiliza para recuperar valores únicos de una tabla, es decir, que no se obtengan valores duplicados.
c. Se utiliza para garantizar que no se inserten valores duplicados en una columna específica.
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Una columna ____ solo puede contener caracteres de un byte.
CHAR
VARCHAR
INT
DATE
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Una columna _______ puede contener caracteres multibyte de hasta un máximo de 4 bytes por carácter.
CHAR
VARCHAR
INT
DATE
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