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Crossword Puzzle

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Esta clave puede tener uno o más campos cuyos valores identifican en forma única cada registro de dicha tabla, es decir, no puede haber dos o mas registros diferentes cuyo valores en dichos campos sean identicos

Created by

roddier gonzalez
roddier gonzalez
Spain

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Crossword Puzzle

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Esta clave puede tener uno o más campos cuyos valores identifican en forma única cada registro de dicha tabla, es decir, no puede haber dos o mas registros diferentes cuyo valores en dichos campos sean identicos

by roddier gonzalez
1

normalmente todas las tablas tiene una

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es una columna o combinacion de columnas

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todos los valores de una columna determinan si tiene el mismo

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estos conjuntos de campos se llama

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una la columna indica que no contiene nada

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muestra a donde esta conectada por un

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estos están extraídos de un conjunto de valores legales llamado

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representa un campo de una tabla

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se puede decir que es un valor

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es una base de datos relacional , que los datos se organizan en

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una tabla tiene de cero o mas

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