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By Abraham Silberschatz, Henry Korth, S. Sudarshan

ISBN-10: 0072283637

ISBN-13: 9780072283631

Database procedure Concepts through Silberschatz, Korth and Sudarshan is now in its sixth variation and is among the cornerstone texts of database schooling. It offers the basic innovations of database administration in an intuitive demeanour aimed toward permitting scholars to start operating with databases as speedy as possible.

The textual content is designed for a primary direction in databases on the junior/senior undergraduate point or the 1st 12 months graduate point. It additionally comprises extra fabric that may be used as vitamins or as introductory fabric for a complicated direction. as the authors current recommendations as intuitive descriptions, a familiarity with uncomplicated info buildings, machine association, and a high-level programming language are the single must haves. very important theoretical effects are coated, yet formal proofs are passed over. rather than proofs, figures and examples are used to signify why a result's true.

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La lógica de negocio de la aplicación, que establece las acciones a realizar bajo determinadas condiciones, se incorpora en el servidor de aplicaciones, en lugar de ser distribuida a múltiples clientes. Las aplicaciones de tres capas son más apropiadas para grandes aplicaciones, y para las aplicaciones que se ejecutan en World Wide Web. 12 CAPÍTULO 1 INTRODUCCIÓN usuario usuario cliente aplicación cliente de aplicaciones red red servidor de aplicaciones sistema de bases de datos servidor sistema de bases de datos a.

Restricciones de consistencia. • Sistema de gestión de bases de datos (SGBD). • Sistemas de archivos. • Transacciones. • Vistas de datos. • Abstracción de datos. • Administrador de la base de datos (ADB). • Aplicaciones de sistemas de bases de datos. • Concurrencia. • Diccionario de datos. • Ejemplar de la base de datos. • Esquema. — Esquema de la base de datos. — Esquema físico. — Esquema lógico. • Inconsistencia de datos. • Independencia física de los datos. • Lenguajes de bases de datos. — Lenguaje de consultas.

Sin embargo, como el usuario no especifica cómo conseguir los datos, el sistema de bases de datos tiene que determinar un medio eficiente de acceder a los datos. El componente LMD del lenguaje SQL es no procedimental. 7 FUNDAMENTOS DE BASES DE DATOS Una consulta es una instrucción de solicitud para recuperar información. La parte de un LMD que implica recuperación de información se llama lenguaje de consultas. Aunque técnicamente sea incorrecto, en la práctica se usan los términos lenguaje de consultas y lenguaje de manipulación de datos como sinónimos.

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Database Systems Concepts by Abraham Silberschatz, Henry Korth, S. Sudarshan

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