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La clave principal de una base de datos relacional. a. Representa un valor que se utiliza para ordenar, indexar y acceder a registros. b. Debe

La clave principal de una base de datos relacional.

a. Representa un valor que se utiliza para ordenar, indexar y acceder a registros.

b. Debe ser un identificador comn para todos los datos de la tabla.

C. Es la contrasea que permite el acceso ilimitado a la base de datos.

d. Nunca debe ser el primer campo de la tabla.

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