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Relaciones y objetos BD

AsterQuiz

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About this activity

Conceptos básicos de relaciones en BD

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Argentina

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Relaciones y objetos BD
 

AsterQuiz

Relaciones y objetos BDOnline version

Conceptos básicos de relaciones en BD

by Silvia del Valle Valdez
1

1. Una_________es el vínculo que se establece entre elementos de distintas tablas para asociar información.

2

2. La clave_______ permite identificar de manera única los registros de una tabla.

3

3. La clave_______permite vincular una tabla con otra utilizando un campo relacionado.

4

4. En una relación uno______ (1:1), un registro de una tabla se relaciona con un único registro de otra tabla.

5

5. En una relación uno______ (1:N), un registro de una tabla puede relacionarse con varios registros de otra.

6

6. Una relación muchos a muchos (N:N) necesita una tabla________ para poder establecerse correctamente.

7

7. Para establecer una relación entre dos campos, el _________de los campos relacionados debe ser compatible.

8

8. La integridad _______ permite mantener la coherencia de los datos relacionados entre las tablas.

9

9. Una consulta de________permite obtener información específica de una o varias tablas sin almacenar datos nuevos.

10

10. Además de la consulta de selección, en Access existen la consulta de______ y la de referencias______.

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