
Preguntas sobre Bases de Datos Relacionales
Authored by Israel Castañon
Computers
University
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué característica principal define al modelo relacional?
Uso de índices en tablas
Representación de datos en forma de tablas *
Creación de diagramas jerárquicos
Relación entre funciones matemáticas
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es una restricción típica en bases de datos relacionales?
Clave primaria *
Configuración de memoria
Rendimiento del servidor
Arquitectura cliente-servidor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué sentencia SQL se utiliza para crear una tabla?
CREATE TABLE *
INSERT INTO
DROP TABLE
SELECT
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué clasificación pertenece al Lenguaje de Definición de Datos (DDL)?
COMMIT y ROLLBACK
SELECT y UPDATE
CREATE y ALTER *
GRANT y REVOKE
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es un comando del Lenguaje de Manipulación de Datos (DML)?
DELETE *
RENAME
GRANT
BEGIN TRANSACTION
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué comando del Lenguaje de Control de Transacciones (TCL) asegura los cambios realizados en la base de datos?
ROLBACK
SAVEPOINT
COMMIT *
GRANT
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué acción realiza el comando REVOKE en el Lenguaje de Control de Datos (DCL)?
Modifica una tabla existente
Elimina privilegios otorgados previamente *
Inserta datos en una tabla
Realiza una consulta compleja
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