{"id":103302,"date":"2022-02-12T03:36:45","date_gmt":"2022-02-12T01:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pervyj-stabilnyj-reliz-relyaczionno-grafovoj-subd-edgedb"},"modified":"2022-02-12T03:36:45","modified_gmt":"2022-02-12T01:36:45","slug":"pervyj-stabilnyj-reliz-relyaczionno-grafovoj-subd-edgedb","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/pervyj-stabilnyj-reliz-relyaczionno-grafovoj-subd-edgedb","title":{"rendered":"Primer lanzamiento estable de la base de datos relacional-gr\u00e1fica EdgeDB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Est\u00e1 disponible la primera versi\u00f3n estable de la base de datos EdgeDB, que es una capa sobre PostgreSQL con una implementaci\u00f3n del modelo de datos relacional y gr\u00e1fico y el lenguaje de consulta EdgeQL, optimizados para trabajar con datos jer\u00e1rquicos complejos. El c\u00f3digo est\u00e1 escrito en los lenguajes Python y Rust y se distribuye bajo la licencia Apache 2.0. Las bibliotecas de cliente est\u00e1n preparadas para los lenguajes Python, Go, Rust y TypeScript\/Javascript. Se proporciona un conjunto de herramientas de l\u00ednea de comandos para gestionar la base de datos y ejecutar consultas de forma interactiva (REPL).      <\/p>\n<p>En lugar de un modelo de datos basado en tablas, EdgeDB utiliza un sistema declarativo basado en tipos de objetos. En lugar de claves externas (foreign key) para definir relaciones entre tipos, se utiliza el enlace de referencias (un objeto puede usarse como propiedad de otro objeto). type Person { required property name -&gt; str; } type Movie { required property title -&gt; str; multi link actors -&gt; Person; }      <\/p>\n<p>Para acelerar el procesamiento de consultas, se pueden utilizar \u00edndices. Tambi\u00e9n se admiten caracter\u00edsticas como la tipificaci\u00f3n estricta de propiedades, restricciones en los valores de las propiedades, propiedades calculadas y procedimientos almacenados. Entre las caracter\u00edsticas de la esquema de almacenamiento de EdgeDB, que recuerda a un ORM, se destaca la posibilidad de mezclar esquemas, vincular propiedades de diferentes objetos y la integraci\u00f3n del soporte para JSON.     <\/p>\n<p>Se proporcionan herramientas integradas para la migraci\u00f3n del esquema de almacenamiento \u2014 tras modificar el esquema definido en un archivo esdl separado, basta con ejecutar el comando \u00abedgedb migration create\u00bb y el SGBD analizar\u00e1 las diferencias en el esquema y generar\u00e1 interactivamente un script para la transici\u00f3n al nuevo esquema. La historia de cambios en el esquema se rastrea autom\u00e1ticamente.    <\/p>\n<p>Para la formulaci\u00f3n de consultas, se admite tanto el lenguaje de consultas GraphQL como el propio lenguaje de EdgeDB, que es una adaptaci\u00f3n de SQL para datos jer\u00e1rquicos. En lugar de listas, los resultados de las consultas se presentan de manera estructurada, y en lugar de subconsultas y operaciones JOIN se ofrece la posibilidad de especificar una consulta EdgeQL como expresi\u00f3n dentro de otra consulta. Se soportan transacciones y ciclos. select Movie { title, actors: { name } } filter .title = \u00abThe Matrix\u00bb insert Movie { title := \u00abThe Matrix Resurrections\u00bb, actors := ( select Person filter .name in { 'Keanu Reeves', 'Carrie-Anne Moss', 'Laurence Fishburne' } ) } for number in {0, 1, 2, 3} union ( select { number, number + 0.5 } );<br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56682\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 \u0421\u0423\u0411\u0414 EdgeDB, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0443\u044e \u0441\u043e\u0431\u043e\u0439 \u043d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0443 \u043d\u0430\u0434 PostgreSQL \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0440\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u043e-\u0433\u0440\u0430\u0444\u043e\u0432\u043e\u0439 \u043c\u043e\u0434\u0435\u043b\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u044f\u0437\u044b\u043a\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 EdgeQL, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441\u043e \u0441\u043b\u043e\u0436\u043d\u044b\u043c\u0438 \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438. \u041a\u043e\u0434 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0430\u0445 Python \u0438 Rust \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0. \u041a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u0434\u043b\u044f \u044f\u0437\u044b\u043a\u043e\u0432 Python, Go, Rust \u0438 TypeScript\/Javascript. \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u043e\u0439 \u0441\u0442\u043e\u043a\u0438 \u0434\u043b\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103302","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 \u0421\u0423\u0411\u0414 EdgeDB, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0443\u044e \u0441\u043e\u0431\u043e\u0439 \u043d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0443 \u043d\u0430\u0434 PostgreSQL \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 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