{"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\/pl\/blog\/news\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","title":{"rendered":"Dla PostgreSQL przygotowano rozszerzenie AGE do przechowywania danych w formie grafu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dla PostgreSQL zaproponowano<\/a><\/noindex> dodatek AGE (AgensGraph-Extension) z implementacj\u0105 j\u0119zyka zapyta\u0144 openCypher<\/a><\/noindex> do manipulacji zestawami powi\u0105zanych ze sob\u0105 hierarchicznych danych, tworz\u0105cych graf. Zamiast kolumn i wierszy, bazy danych oparte na grafach wykorzystuj\u0105 struktur\u0119 przypominaj\u0105c\u0105 sie\u0107 \u2014 definiowane s\u0105 w\u0119z\u0142y, ich w\u0142a\u015bciwo\u015bci oraz relacje mi\u0119dzy w\u0119z\u0142ami. AGE rozpowszechniany<\/a><\/noindex> na licencji Apache 2.0, przekazany przez firm\u0119 Bitnine pod opiek\u0119 Fundacji Apache i obecnie znajduje si\u0119 w inkubatorze Apache. <\/p>\n

Projekt kontynuuje rozw\u00f3j systemu DBMS AgensGraph<\/a><\/noindex>, kt\u00f3ry jest<\/a><\/noindex> jest zmodyfikowan\u0105 wersj\u0105 PostgreSQL dostosowan\u0105 do przetwarzania graf\u00f3w. Kluczow\u0105 r\u00f3\u017cnic\u0105 jest implementacja AGE w formie uniwersalnego dodatku, dzia\u0142aj\u0105cego jako nak\u0142adka na standardowe wersje PostgreSQL. Opublikowana niedawno wersja Apache AGE 0.2.0<\/a><\/noindex> obs\u0142uguje prac\u0119 z PostgreSQL 11.<\/p>\n

W obecnym stanie AGE wspiera<\/a><\/noindex> takie mo\u017cliwo\u015bci j\u0119zyka zapyta\u0144 Cypher, jak zastosowanie wyra\u017cenia \u201eCREATE\u201d do definiowania w\u0119z\u0142\u00f3w i relacji, wyra\u017cenie \u201eMATCH\u201d do wyszukiwania danych w grafie na podstawie okre\u015blonych warunk\u00f3w (WHERE), w podanej kolejno\u015bci (ORDER BY) oraz z na\u0142o\u017conymi ograniczeniami (SKIP, LIMIT). Zestaw danych zwracany przez zapytanie jest okre\u015blany za pomoc\u0105 wyra\u017cenia \u201eRETURN\u201d. Do \u0142\u0105czenia kilku zapyta\u0144 w \u0142a\u0144cuch dost\u0119pne jest wyra\u017cenie \u201eWITH\u201d. <\/p>\n

Mo\u017cliwe jest tworzenie multimodelowych baz danych, kt\u00f3re \u0142\u0105cz\u0105 modele hierarchicznego przechowywania w\u0142a\u015bciwo\u015bci w formie grafu, relacyjnym modelem oraz modelem przechowywania dokument\u00f3w w formacie JSON. Obs\u0142ugiwane jest wykonywanie zintegrowanych zapyta\u0144, kt\u00f3re zawieraj\u0105 elementy j\u0119zyk\u00f3w SQL i Cypher.
\nDost\u0119pne jest tworzenie indeks\u00f3w dla w\u0142a\u015bciwo\u015bci wierzcho\u0142k\u00f3w i kraw\u0119dzi grafu.
\nDo u\u017cytku zaproponowano rozszerzony zestaw typ\u00f3w Agtype, w tym typy dla kraw\u0119dzi, wierzcho\u0142k\u00f3w i \u015bcie\u017cek w grafie. Wyra\u017cenia agregacyjne na razie nie zosta\u0142y zaimplementowane. W\u015br\u00f3d dost\u0119pnych specjalizowanych funkcji znajduj\u0105 si\u0119: id, start_id, end_id, type, properties, head, last, length, size, startNode, endNode, timestamp, toBoolean, toFloat, toInteger i coalesce. <\/p>\n

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

\u0179r\u00f3d\u0142o: 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\udd47Dla PostgreSQL przygotowano dodatek AGE do przechowywania danych w formie grafu | ProHoster","description":"Dla PostgreSQL zaproponowano dodatek AGE (AgensGraph-Extension) z implementacj\u0105 j\u0119zyka 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