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Quiz base de datos: ¿Verdadero o Falso?

Yes or No

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Evalúa conceptos clave de bases de datos.

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Mexico

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Quiz base de datos: ¿Verdadero o Falso?
 

Quiz base de datos: ¿Verdadero o Falso?Online version

Evalúa conceptos clave de bases de datos.

by USIEL EDUARDO RINCON MARTINEZ
1

En un modelo de base de datos, las tablas nunca deben estar normalizadas.

2

Las bases de datos relacionales organizan datos en tablas con filas y columnas y pueden definir claves.

3

Una base de datos es un conjunto de datos estructurados y almacenados de forma persistente.

4

Las consultas SQL no pueden modificar datos; solo leen.

5

Una clave primaria identifica de forma única cada fila dentro de una tabla.

6

Un DBMS (gestor de bases de datos) administra el almacenamiento y las operaciones de consulta y actualización.

7

Las transacciones en una base de datos suelen ser ACID: atomicidad, consistencia, aislamiento y durabilidad.

8

Un índice ralentiza las búsquedas en una base de datos.

9

Un clúster de bases de datos siempre garantiza tolerancia a fallos sin configuración adicional.

10

Las bases de datos no relacionales no pueden almacenar datos en forma de documentos.

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