{"id":4319,"date":"2020-10-30T22:02:17","date_gmt":"2020-10-30T21:02:17","guid":{"rendered":"https:\/\/webhosting.de\/?p=4319"},"modified":"2020-10-30T22:02:17","modified_gmt":"2020-10-30T21:02:17","slug":"xml-extensible-markup-language","status":"publish","type":"post","link":"https:\/\/webhosting.de\/es\/xml-extensible-markup-language\/","title":{"rendered":"XML (Extensible Markup Language)"},"content":{"rendered":"<p>La abreviatura XML hace referencia al Lenguaje de Marcado Extensible, que se utiliza para la representaci\u00f3n de datos estructurados jer\u00e1rquicamente. <a href=\"https:\/\/webhosting.de\/es\/personenbezogene-daten-sozialen-netzwerken\/\">Datos<\/a> en formato de archivo de texto. El XML tambi\u00e9n se utiliza para el intercambio de datos entre sistemas inform\u00e1ticos independientes de las plataformas y las implementaciones.<\/p>\n<h3>Las caracter\u00edsticas del XML<\/h3>\n<p>La especificaci\u00f3n XML define un meta-lenguaje, sobre cuya base, a su vez, los lenguajes espec\u00edficos de las aplicaciones est\u00e1n determinados por restricciones de contenido y estructurales. Las restricciones se expresan mediante esquemas XML o DTD. Los ejemplos de lenguajes XML incluyen MathML, RSS, GraphML, XAML, o GPX, as\u00ed como el propio esquema XML. Un documento XML est\u00e1 compuesto por caracteres de texto en codificaci\u00f3n UTF-8. Puedes ver y editar XML en cualquier editor que soporte UTF-8. Si un documento XML ha de contener datos binarios, estos datos deben codificarse como texto, para lo cual pueden utilizarse diferentes tipos de codificaci\u00f3n. En lo que respecta a los documentos XML, se considera que el elemento es la unidad estructural m\u00e1s importante, con elementos que contienen tanto texto como otros elementos como contenido. El nombre de un elemento XML puede definirse libremente en los documentos XML sin DTD. En los documentos XML con DTD, los nombres de los elementos deben visualizarse en la DTD y el elemento debe estar en una posici\u00f3n que se permita en la estructura de \u00e1rbol. El contenido de cada elemento se define en el DTD. Los elementos se consideran portadores de informaci\u00f3n de un documento XML,<\/p>\n<h3>La historia de XML<\/h3>\n<p>El XML surgi\u00f3 del hecho de que el lenguaje de programaci\u00f3n <a href=\"https:\/\/webhosting.de\/es\/html-hypertext-markup-language\/\">HTML<\/a> ha llegado a un cierto punto de agotamiento.<br \/>\nAunque el HTML ha logrado mucho, sus limitaciones se pusieron de manifiesto muy pronto en los comienzos de la Internet y se hizo evidente con relativa rapidez que se necesitaba un lenguaje que ofreciera la posibilidad de definir cualquier etiqueta de manera universal. El SGML era un lenguaje de documentos m\u00e1s largo y universal, del que tambi\u00e9n se derivaba el HTML, pero result\u00f3 ser demasiado complicado para la web. Con el XML se desarroll\u00f3 un lenguaje de documentos muy ligero, que se puede ampliar arbitrariamente. El XML se utiliza para definir las etiquetas propias de forma sencilla, por lo que la apariencia es fija, en contraste con el significado, que no est\u00e1 definido. Una etiqueta se mantiene por s\u00ed sola o encierra un \u00e1rea, por lo que las etiquetas tienen uno o m\u00e1s par\u00e1metros o ninguno en absoluto. Los par\u00e1metros reciben valores que son encerrados y asignados con ciertos comandos. Las etiquetas pueden anidarse entre s\u00ed, estructurando as\u00ed los datos jer\u00e1rquicamente.<\/p>\n<h3><a href=\"https:\/\/webhosting.de\/wp-content\/uploads\/2017\/03\/Fotolia_140932888_XS.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-2644 alignright\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2017\/03\/Fotolia_140932888_XS.jpg\" alt=\"xml\" width=\"424\" height=\"283\" \/><\/a>Las ventajas del XML<\/h3>\n<p>B\u00e1sicamente, XML puede utilizarse para cualquier tipo de descripci\u00f3n, almacenamiento o intercambio de datos. Las ventajas de XML residen en su amplia distribuci\u00f3n y el bajo esfuerzo de aprendizaje asociado, en su popularidad y en su facilidad de uso. <a href=\"https:\/\/webhosting.de\/es\/bessere-lesbarkeit-mit-yoast-seo-erreichen-die-anleitung\/\">Legibilidad<\/a> para la m\u00e1quina y el hombre. En comparaci\u00f3n con un formato binario propio, que es compacto, los mayores requisitos de memoria y el procesamiento a veces m\u00e1s lento son algunas de las desventajas. Sin embargo, ambos aspectos apenas desempe\u00f1an un papel hoy en d\u00eda, por lo que las ventajas superan a los inconvenientes y, en consecuencia, el XML ha podido establecerse en numerosas \u00e1reas.<\/p>\n<h3>Varios campos de aplicaci\u00f3n<\/h3>\n<p>Adem\u00e1s del uso de nuevas etiquetas para escribir documentos, las diferentes \u00e1reas de aplicaci\u00f3n incluyen<br \/>\nque se pueden generar diferentes formatos de salida a partir de una misma p\u00e1gina XML y que la creaci\u00f3n de sitios web se puede hacer con la separaci\u00f3n del dise\u00f1o y la programaci\u00f3n.<\/p>","protected":false},"excerpt":{"rendered":"<p>Mit der Abk\u00fcrzung XML wird die Extensible Markup Language (englisch f\u00fcr &#8222;erweiterbare Auszeichnungssprache&#8220;) bezeichnet, die der Darstellung von hierarchisch strukturierten Daten in Textdatei-Format dient. XML wird zudem auch f\u00fcr den Austausch von Daten, die unabh\u00e4ngig von Plattformen und Implementierungen sind, zwischen Rechner-Systemen verwendet. Die Merkmale von XML Durch die XML-Spezifikation wird eine Metasprache definiert, auf 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