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En la actualidad toda la información que manejan los programas informáticos se almacena en bases de datos. La obra que presentamos centra su atención en el diseño conceptual y lógico de bases de datos. Ambos son aspectos esenciales previos a la creación de una base de datos en un sistema gestor de bases de datos concreto. Se analiza con profundidad el modelo de datos relacional al ser el modelo lógico más empleado hoy en día. Por lo que respecta a la fase de diseño conceptual, el autor explica y estudia con detalle tanto los diagramas Entidad-Relación como los diagramas de clases. Expone con claridad y sencillez dos formas de ejecutar el diseño lógico consistente en obtener la estructura de la base de datos relacional: mediante la aplicación de una serie de reglas de transformación a los diagramas Entidad-Relación y a través de la teoría de la normalización. Para facilitar la comprensión, el aprendizaje y la práctica de lo expuesto, la obra se completa con numerosos ejemplos, ejercicios resueltos y una exhaustiva propuesta de ejercicios cuyas soluciones son accesibles a través de la web de Ediciones Paraninfo. Además, el libro responde exactamente al contenido curricular de la unidad formativa UF 1471, titulada Bases de datos relacionales y modelado de datos, que forma parte del Módulo Formativo MF 0225_3 titulado Gestión de bases de datos y que se integra en el certificado de profesionalidad IFCT0310 denominado a su vez istración de bases de datos, cuyo contenido regula el RD 1531/2011 de 31 de octubre. Nos encontramos pues, ante una obra imprescindible tanto para profesionales de sistemas y telemática como para quienes están formándose en este campo profesional que presenta una enorme proyección de futuro.;José Manuel Piñeiro Gómez (Santurce, 1975) es Ingeniero en Informática por la Universidad de Deusto y Máster oficial en la Sociedad de la Información y el Conocimiento por la Universitat Oberta de Catalunya. Desde el año 2001 es profesor de Enseñanza Secundaria en la especialidad de Informática e imparte docencia en ciclos formativos de Formación Profesional. Desde 2011 trabaja también como profesor asociado en el área de Lenguajes y Sistemas Informáticos de la Universidad Pública de Navarra. Es autor de diversas publicaciones relacionadas con aspectos didácticos de la informática y las bases de datos.