{"id":88105,"date":"2020-07-12T13:42:29","date_gmt":"2020-07-12T11:42:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa"},"modified":"2020-07-12T13:42:29","modified_gmt":"2020-07-12T11:42:29","slug":"dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","title":{"rendered":"Per PostgreSQL \u00e8 disponibile il supplemento AGE per la memorizzazione dei dati in forma di grafo.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Per PostgreSQL suggerito<\/a><\/noindex> il complemento AGE (AgensGraph-Extension) con implementazione del linguaggio di query openCypher<\/a><\/noindex> per operare su insiemi di dati gerarchici correlati che formano un grafo. Invece di colonne e righe, i database orientati ai grafi utilizzano una struttura simile a una rete: si definiscono nodi, le loro propriet\u00e0 e le relazioni tra i nodi. AGE distribuito<\/a><\/noindex> \u00e8 sotto licenza Apache 2.0, trasferito da Bitnine sotto l'egida della Apache Foundation e attualmente in incubazione in Apache. <\/p>\n

Il progetto continua a svilupparsi come sistema di gestione di database AgensGraph<\/a><\/noindex>, che rappresenta<\/a><\/noindex> una modifica rielaborata per la gestione di grafi di PostgreSQL. La differenza chiave \u00e8 l'implementazione di AGE sotto forma di un complemento universale, che funziona come un'estensione delle release standard di PostgreSQL. La release pubblicata recentemente Apache AGE 0.2.0<\/a><\/noindex> supporta il funzionamento con PostgreSQL 11.<\/p>\n

Nell'attuale stato AGE supporta<\/a><\/noindex> funzionalit\u00e0 del linguaggio di query Cypher, come l'uso dell'istruzione \u00abCREATE\u00bb per definire nodi e relazioni, l'istruzione \u00abMATCH\u00bb per cercare dati nel grafo secondo condizioni specifiche (WHERE), in un ordine definito (ORDER BY) e con limitazioni impostate (SKIP, LIMIT). L'insieme dei dati risultante restituito dalla query \u00e8 determinato tramite l'istruzione \u00abRETURN\u00bb. Per concatenare pi\u00f9 query in una catena \u00e8 disponibile l'istruzione \u00abWITH\u00bb. <\/p>\n

\u00c8 possibile creare database multimodello, che combinano modelli di archiviazione gerarchica delle propriet\u00e0 in forma di grafo, modello relazionale e modello di archiviazione dei documenti in formato JSON. \u00c8 supportata l'esecuzione di query integrate che includono elementi dei linguaggi SQL e Cypher.
\n\u00c8 disponibile la creazione di indici per le propriet\u00e0 dei nodi e dei lati del grafo.
\n\u00c8 proposto un insieme ampliato di tipi Agtype, che include tipi per lati, nodi e percorsi nel grafo. Le espressioni aggregate non sono ancora implementate. Tra le funzioni specializzate disponibili ci sono: id, start_id, end_id, type, properties, head, last, length, size, startNode, endNode, timestamp, toBoolean, toFloat, toInteger e coalesce. <\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043b\u044f PostgreSQL \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043e \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 AGE (AgensGraph-Extension) \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u044f\u0437\u044b\u043a\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 openCypher \u0434\u043b\u044f \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0439 \u0441 \u043d\u0430\u0431\u043e\u0440\u0430\u043c\u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439 \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0434\u0430\u043d\u043d\u044b\u0445, \u043e\u0431\u0440\u0430\u0437\u0443\u044e\u0449\u0438\u0445 \u0433\u0440\u0430\u0444. \u0412\u043c\u0435\u0441\u0442\u043e \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432 \u0438 \u0441\u0442\u0440\u043e\u043a \u0433\u0440\u0430\u0444\u043e-\u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u044b\u0435 \u0411\u0414 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443, \u043f\u043e\u0445\u043e\u0436\u0443\u044e \u043d\u0430 \u0441\u0435\u0442\u044c — \u0437\u0430\u0434\u0430\u044e\u0442\u0441\u044f \u0443\u0437\u043b\u044b, \u0438\u0445 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 \u0438 \u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u044f \u043c\u0435\u0436\u0434\u0443 \u0443\u0437\u043b\u0430\u043c\u0438. AGE \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, \u043f\u0435\u0440\u0435\u0434\u0430\u043d \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Bitnine \u043f\u043e\u0434 \u043f\u043e\u043a\u0440\u043e\u0432\u0438\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u043e \u0424\u043e\u043d\u0434\u0430 Apache […]<\/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-88105","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Per PostgreSQL \u00e8 stato sviluppato il plugin AGE per la memorizzazione dei dati in forma di grafo | ProHoster","description":"Per PostgreSQL \u00e8 disponibile l'estensione AGE (AgensGraph-Extension) con implementazione del linguaggio di 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