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Mary Lamb es una representante de ventas de seguros. Su empresa le ha proporcionado una computadora porttil que utiliza conectividad inalmbrica para acceder al sistema

Mary Lamb es una representante de ventas de seguros. Su empresa le ha proporcionado una computadora porttil que utiliza conectividad inalmbrica para acceder al sistema de informacin contable desde prcticamente cualquier lugar del pas. Ella tiene acceso para ver la informacin del cliente y del producto de seguro. Tambin tiene acceso que le permite ingresar y cancelar pedidos de clientes. Los permisos para Mary (y otros representantes de ventas) definen un ________ en el sistema de administracin de la base de datos de la empresa.

A. esquema de nivel conceptual

B. esquema de nivel externo

C. vista fsica

D. diccionario de datos

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