{"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\/et\/blog\/news\/pervyj-stabilnyj-reliz-relyaczionno-grafovoj-subd-edgedb","title":{"rendered":"Esimene stabiilne relaas relatsioonilisest ja graafilisest andmebaasi juhtimisest EdgeDB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Esimene stabiilne versioon andmebaasist EdgeDB on n\u00fc\u00fcd saadaval. See on PostgreSQL peal ehitatud, rakendades relatsiooniliste ja graafikute andmemudelite ning EdgeQL p\u00e4ringute keelt, mis on optimeeritud keerukate hierarhiliste andmete t\u00f6\u00f6tlemiseks. Kood on kirjutatud keeltes Python ja Rust ning jagatakse Apache 2.0 litsentsi alusel. Klientide teegid on ette valmistatud keelte jaoks Python, Go, Rust ja TypeScript\/Javascript. Pakutakse k\u00e4surea t\u00f6\u00f6riistu andmebaasi haldamiseks ja interaktiivsete p\u00e4ringute t\u00e4itmiseks (REPL).      <\/p>\n<p>EdgeDB kasutab tabelip\u00f5hise andmemudeli asemel deklaratiivset s\u00fcsteemi, mis p\u00f5hineb objekti t\u00fc\u00fcpidel. \u00dchenduste m\u00e4\u00e4ramiseks t\u00fc\u00fcpide vahel kasutavad nad sidumist linkide kaudu (\u00fcks objekt v\u00f5ib olla teise objekti omadus).        type Person {       required property name -&gt; str;     }     type Movie {       required property title -&gt; str;       multi link actors -&gt; Person;     }      <\/p>\n<p>P\u00e4ringute t\u00f6\u00f6tlemise kiirendamiseks v\u00f5ivad rakenduda indeksid. Toetatakse ka selliseid v\u00f5imalusi nagu omaduste range t\u00fcpiseerimine, omaduste v\u00e4\u00e4rtuste piirangud, arvutatud omadused ja salvestatud protseduurid. EdgeDB objekti salvestamise skeemi erip\u00e4rad, mis sarnanevad ORM-iga, h\u00f5lmavad skeemide segamist, erinevatest objektidest omaduste sidumist ja integreeritud JSONi tuge.     <\/p>\n<p>Sissee tulevad sisseehitatud t\u00f6\u00f6riistad andmebaasi scheemi migreerimiseks \u2014 p\u00e4rast eraldi esdl-failis m\u00e4\u00e4ratud skeemi muutmist piisab k\u00e4su \"edgedb migration create\" k\u00e4ivitamisest, ja DBMS anal\u00fc\u00fcsib skeemi erinevusi ning genereerib interaktiivselt skripti uuele skeemile \u00fcleminekuks. Skeemi muudatuste ajalugu j\u00e4lgitakse automaatselt.    <\/p>\n<p>K\u00fcsimuste koostamiseks toetatakse nii GraphQL p\u00e4ringute keelt kui ka EdgeDB enda keelt, mis on SQL-i kohandamine hierarhilistele andmetele. Loendite asemel esitatakse p\u00e4ringu tulemused struktureeritud kujul ja alamp\u00e4ringute ning JOIN operatsioonide asemel on v\u00f5imalik \u00fcks EdgeQL p\u00e4ring v\u00e4ljendina m\u00e4rkida teise p\u00e4ringu sees. Toetatakse tehinguid ja ts\u00fckleid.         select Movie {       title,       actors: {         name       }     }     filter .title = &#171;The Matrix&#187;       insert Movie {       title := &#171;The Matrix Resurrections&#187;,       actors := (         select Person         filter .name in {           &#8216;Keanu Reeves&#8217;,           &#8216;Carrie-Anne Moss&#8217;,           &#8216;Laurence Fishburne&#8217;         }       )     }       for number in {0, 1, 2, 3}     union (       select { number, number + 0.5 }     );<br \/>\n<br \/>Allikas: <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 5.0.1.1 - 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