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Desafío de Bases de Datos

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About this activity

Ejercita tus conocimientos sobre bases de datos.

Created by

NAOMI SARAI ZAMORA REYES
NAOMI SARAI ZAMORA REYES
Mexico

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Desafío de Bases de Datos
 

Desafío de Bases de DatosOnline version

Ejercita tus conocimientos sobre bases de datos.

by NAOMI SARAI ZAMORA REYES
1

La normalización reduce la redundancia de datos y mejora la integridad.

2

Un índice puede acelerar las búsquedas y consultas sobre columnas específicas.

3

SQL es el lenguaje utilizado para consultar y manipular datos en bases de datos relacionales.

4

Las bases de datos NoSQL no permiten consultas complejas como JOINs con ningún motor de consulta.

5

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

6

Un índice almacena todas las columnas de la tabla para acelerar cualquier consulta.

7

Una base de datos relacional organiza datos en tablas con filas y columnas.

8

En una base de datos relacional, no se usan claves foráneas para mantener la integridad referencial.

9

Las transacciones en bases de datos modernas no pueden ser atómicas ni consistentes.

10

En un esquema flexible de base de datos relacional, cada fila puede tener columnas desde cualquier tipo sin restricciones de esquema.

 
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