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MODELO RELACIONAL

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MODELO RELACIONAL

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About this activity

En este juego, los participantes deben determinar si los elementos presentados están relacionados con el concepto de modelo relacional en bases de datos. Responde con ✅ si el elemento está relacionado y con ❌ si no lo está.

Created by

Estrella Ballesteros
Estrella Ballesteros
Mexico

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MODELO RELACIONAL
 

MODELO RELACIONALOnline version

En este juego, los participantes deben determinar si los elementos presentados están relacionados con el concepto de modelo relacional en bases de datos. Responde con ✅ si el elemento está relacionado y con ❌ si no lo está.

by Estrella Ballesteros
1

¿Una relación en el modelo relacional puede tener tuplas duplicadas?

2

¿Una clave primaria puede tener valores nulos?

3

¿Es posible que una tabla tenga más de una clave candidata?

4

¿Una clave foránea puede referenciar una clave primaria en otra tabla?

5

¿Las relaciones en el modelo relacional siempre tienen un orden definido en sus tuplas?

6

¿Se puede aplicar una operación de proyección para reducir el número de columnas en una tabla?

7

¿Un atributo puede pertenecer al mismo tiempo a la clave primaria y a la clave foránea?

 
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