Llaves Primarias.
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Llaves Primarias.

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Constraint PRIMARY KEY\" o Clave primaria. Una clave primaria son uno o mas campos que identifican de manera nica a cada una de las filas de una tabla. Si la clave primaria es un solo campo este debe cumplir con las siguientes condiciones: su valor es nico y no vacos para cada fila o r
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Llaves Primarias.

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1. Llaves Primarias. PRIMARY KEY

5. Ejemplos. PRIMARY KEY

6. Ejercicios.

7. Ejercicios.


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