{"id":99375,"date":"2021-03-07T16:22:42","date_gmt":"2021-03-07T14:22:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/subd-dolt-pozvolyayushhaya-manipulirovat-dannymi-v-stile-git"},"modified":"2021-03-07T16:22:42","modified_gmt":"2021-03-07T14:22:43","slug":"subd-dolt-pozvolyayushhaya-manipulirovat-dannymi-v-stile-git","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/subd-dolt-pozvolyayushhaya-manipulirovat-dannymi-v-stile-git","title":{"rendered":"Il DBMS Dolt, che consente di manipolare i dati in stile Git","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Il progetto Dolt sviluppa un DBMS che unisce il supporto per SQL con strumenti di versioning dei dati in stile Git. Dolt consente di clonare tabelle, creare fork ed eseguire fusioni delle tabelle, cos\u00ec come di effettuare operazioni di push e pull analoghe a quelle di un repository git. Inoltre, il DBMS supporta le query SQL ed \u00e8 compatibile con MySQL a livello di interfacce client. Il codice del progetto \u00e8 scritto in Go e distribuito sotto la licenza Apache 2.0.    <\/p>\n<p>Le funzionalit\u00e0 di versioning dei dati nel database consentono di monitorare l'origine dei dati \u2014 il collegamento ai commit permette di fissare uno stato affinch\u00e9 risultati identici possano essere ripetuti in qualsiasi momento su altri sistemi, indipendentemente dallo stato attuale. Inoltre, gli utenti possono navigare nella cronologia, monitorare le modifiche nelle tabelle utilizzando SQL senza la necessit\u00e0 di confrontare i backup, eseguire audit delle modifiche e generare query che coprono i dati in un determinato momento.      <center><img decoding=\"async\" alt=\"Il DBMS Dolt, che consente di manipolare i dati in stile Git\" src=\"\/wp-content\/uploads\/2021\/03\/9021513a51ad7a9cd21fe3514b295369.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>          <\/p>\n<p>Il DBMS offre due modalit\u00e0 di funzionamento \u2014 Offline e Online. Dopo la conversione in offline, il contenuto del database diventa disponibile come un repository, con il quale \u00e8 possibile eseguire operazioni utilizzando un'utilit\u00e0 da riga di comando simile a git. Il funzionamento \u00e8 simile a git e si differenzia principalmente per il fatto che le modifiche sono monitorate non per i file, ma per il contenuto delle tabelle. Attraverso l'interfaccia CLI proposta, \u00e8 possibile importare dati da file in formato CSV o JSON, aggiungere commit con modifiche, visualizzare le differenze tra le versioni, creare branch, impostare tag, eseguire push verso server esterni ed effettuare fusioni delle modifiche proposte da altri partecipanti.        <\/p>\n<p>Se desiderato, i dati possono essere ospitati nel catalogo DoltHub, che pu\u00f2 essere considerato un'alternativa a GitHub per l'hosting dei dati e la collaborazione. Gli utenti possono creare fork dei repository di dati, proporre le proprie modifiche e eseguire fusioni con i propri dati. Ad esempio, su DoltHub \u00e8 possibile trovare vari DB con statistiche sul coronavirus, collezioni di dati annotati per sistemi di machine learning, lessici linguistici, collezioni di immagini, set per la classificazione degli oggetti e informazioni sull'appartenenza. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/lir\/ipv4\/\"   title=\"indirizzi IP\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"831\">indirizzi IP<\/a>.    <\/p>\n<p>In modalit\u00e0 \u00abonline\u00bb viene avviato il Dolt SQL Server, che consente di manipolare i dati tramite il linguaggio SQL. L'interfaccia fornita \u00e8 simile a MySQL e pu\u00f2 essere utilizzata tramite la connessione di client compatibili con MySQL o attraverso l'interfaccia CLI. In questo modo, Dolt \u00e8 pi\u00f9 uno strumento di manipolazione dei dati piuttosto che un sistema di elaborazione delle query. Ad esempio, per impostazione predefinita, il server SQL pu\u00f2 gestire solo una connessione attiva dell'utente al repository posizionato nella directory corrente (comportamento che pu\u00f2 essere modificato tramite le impostazioni). \u00c8 possibile il trasferimento <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3697\">server<\/a> a una modalit\u00e0 solo lettura. Molte operazioni legate al versioning possono essere eseguite anche tramite SQL, ad esempio effettuare commit o passare da un ramo all'altro.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54716\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u043e\u0435\u043a\u0442 Dolt \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u0421\u0423\u0411\u0414, \u0441\u043e\u0447\u0435\u0442\u0430\u044e\u0449\u0443\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 SQL \u0441\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430\u043c\u0438 \u0432\u0435\u0440\u0441\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0441\u0442\u0438\u043b\u0435 Git. Dolt \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043a\u043b\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0442\u0430\u0431\u043b\u0438\u0446\u044b, \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u0444\u043e\u0440\u043a\u0438 \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0441\u043b\u0438\u044f\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 push \u0438 pull \u043f\u043e \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0438 \u0441 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f\u043c\u0438 \u0432 git-\u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u0421\u0423\u0411\u0414 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0438 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u0430 \u0441 MySQL \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0445 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":99376,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-99375","post","type-post","status-publish","format-standard","has-post-thumbnail","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=\"\u041f\u0440\u043e\u0435\u043a\u0442 Dolt 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