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MySQL es un sistema gestor de bases de datos relacional cliente-servidor de coste mínimo que incluye un servidor SQL, programas cliente para acceder al servidor, herramientas administrativas y una interfaz de programación para escribir programas. MySQL es moveable y se ejecuta en sistemas operativos comerciales como Linux y home windows. Este libro profundiza en el diseño, programación y administración de bases de datos MySQL.

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El jerirquiro y el en red. requirieron el uso d r p n t r r o s fisiros predefinidos p a r a enlazar 10s registros relacionados. E n 1970, r l articulo d e E. F. Codd sohre el modelo d r datos relarional revolucioni, el pensarniento en la industria d e las hases d e datos. El enfoqne de Codd proponia el a c w w y la manipulacihn de 10s datos hnic:arnrnte desde el punto de vista d e sus caractrristicas l6giras. D ~ l r a n t e10s a h setrnta y ochenta se desarrollaron nurnerosos sisternas d e hase de datos rrlarionalrs y.

Estos prograih el1 mas utilizan el Irngilajt. d r hrdmes tlrl SGHD y liacrn uso d e la i n f o ~ ~ i n a c contenitla el diccionario tie datos. Estos programas grnrran informacihn, quc purtle i~tilizarsrpor 10s rjrcutivos y 10s gri-entcbspara tomar decisiones en el negocio. Los jwogranlas tle aplicat~iGn tmubibn p u r d m grncrar las notificaeiorirs d r factwas y ntros docuninitos ntilizatlos por 10s climtes del nrgocio. Dr rste motlo. pueclr verse clue en nn sistcrna adec~~atlanwnte tlisriiatlo y en funcionamimto.

Urrda las trvh (:lases de interrrlacionrs entre tahlas? Por conveniencia las volveremos a rrprtir aqni: 1 SERVlClOS PARA CELEBRACIONES: UN EJEMPLO... Field - Roster: Table Properties. Fleld Name- 2. - Minimum 7 I I 4. - Default I I I 5 . Picture I[ Enter a field name up to 25 characters long Nombre de campo Tipo Proyec# N Fecha D #Invitados I Tamaiio N Costo Est $ Cant. cargada $ * I Nombre de campo 1 1 Nombre / A 1 2 5 1 Nombrede tampo I Tipo / A I Nombre-Comida I ( 1 Clave I I Tipo ~ Tamaiio I =lave I Tamaiio ( Clave 2 1 * 1 ( I I ~ l DISENOY ADMINISTRACI~N DE BASES DE DATOS Nombre de campo Tipo I Proyec# N Cant.

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