{"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\/cs\/blog\/news\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","title":{"rendered":"Pro PostgreSQL bylo p\u0159ipraveno roz\u0161\u00ed\u0159en\u00ed AGE pro ukl\u00e1d\u00e1n\u00ed dat ve form\u011b grafu.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pro PostgreSQL navrhnuto<\/a><\/noindex> roz\u0161\u00ed\u0159en\u00ed AGE (AgensGraph-Extension) s implementac\u00ed dotazovac\u00edho jazyka openCypher<\/a><\/noindex> pro manipulaci s mno\u017einami vz\u00e1jemn\u011b propojen\u00fdch hierarchick\u00fdch dat, kter\u00e1 vytv\u00e1\u0159ej\u00ed graf. M\u00edsto sloupc\u016f a \u0159\u00e1dk\u016f grafov\u011b orientovan\u00e9 datab\u00e1ze pou\u017e\u00edvaj\u00ed strukturu podobnou s\u00edti \u2014 definuj\u00ed se uzly, jejich vlastnosti a vztahy mezi uzly. AGE distribuov\u00e1no<\/a><\/noindex> licencov\u00e1no pod Apache 2.0, p\u0159ed\u00e1no spole\u010dnost\u00ed Bitnine pod ochranou Apache Foundation a v sou\u010dasnosti um\u00edst\u011bno v inkub\u00e1toru Apache. <\/p>\n

Projekt pokra\u010duje v rozvoji S\u0158BD AgensGraph<\/a><\/noindex>, kter\u00e1 p\u0159edstavuje<\/a><\/noindex> je upraven\u00e1 verze PostgreSQL p\u0159izp\u016fsoben\u00e1 pro zpracov\u00e1n\u00ed graf\u016f. Kl\u00ed\u010dov\u00fdm rozd\u00edlem je implementace AGE ve form\u011b univerz\u00e1ln\u00edho roz\u0161\u00ed\u0159en\u00ed, kter\u00e9 funguje jako nadstavba nad standardn\u00edmi verzemi PostgreSQL. \u010cerstv\u011b publikovan\u00e1 verze Apache AGE 0.2.0<\/a><\/noindex> podporuje pr\u00e1ci s PostgreSQL 11.<\/p>\n

V sou\u010dasn\u00e9m stavu AGE srcset<\/a><\/noindex> takov\u00e9 mo\u017enosti dotazovac\u00edho jazyka Cypher, jako je pou\u017eit\u00ed v\u00fdrazu \u201eCREATE\u201c pro definici uzl\u016f a vztah\u016f, v\u00fdraz \u201eMATCH\u201c pro vyhled\u00e1v\u00e1n\u00ed dat v grafu podle zadan\u00fdch podm\u00ednek (WHERE), v uveden\u00e9m po\u0159ad\u00ed (ORDER BY) a se stanoven\u00fdmi omezen\u00edmi (SKIP, LIMIT). V\u00fdsledn\u00e1 mno\u017eina dat vracen\u00e1 dotazem je definov\u00e1na pomoc\u00ed v\u00fdrazu \u201eRETURN\u201c. Pro spojen\u00ed n\u011bkolika dotaz\u016f do \u0159et\u011bzce je k dispozici v\u00fdraz \u201eWITH\u201c. <\/p>\n

Lze vytv\u00e1\u0159et multimod\u00e1ln\u00ed datab\u00e1ze kombinuj\u00edc\u00ed hierarchick\u00e9 ukl\u00e1d\u00e1n\u00ed vlastnost\u00ed ve form\u011b grafu, rela\u010dn\u00ed model a model ukl\u00e1d\u00e1n\u00ed dokument\u016f ve form\u00e1tu JSON. Podporuje se prov\u00e1d\u011bn\u00ed integrovan\u00fdch dotaz\u016f zahrnuj\u00edc\u00edch prvky jazyk\u016f SQL a Cypher.
\nJe mo\u017en\u00e9 vytv\u00e1\u0159et indexy pro vlastnosti uzl\u016f a hran grafu.
\nPro pou\u017eit\u00ed byl nab\u00eddnut roz\u0161\u00ed\u0159en\u00fd soubor typ\u016f Agtype, v\u010detn\u011b typ\u016f pro hrany, uzly a cesty v grafu. Agrega\u010dn\u00ed v\u00fdrazy zat\u00edm nebyly implementov\u00e1ny. Mezi dostupn\u00fdmi specializovan\u00fdmi funkcemi jsou: id, start_id, end_id, type, properties, head, last, length, size, startNode, endNode, timestamp, toBoolean, toFloat, toInteger a coalesce. <\/p>\n

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

Zdroj: 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\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\udd47Pro PostgreSQL bylo p\u0159ipraveno roz\u0161\u00ed\u0159en\u00ed AGE pro uchov\u00e1v\u00e1n\u00ed dat ve form\u011b grafu | ProHoster","description":"Pro PostgreSQL bylo navr\u017eeno roz\u0161\u00ed\u0159en\u00ed AGE (AgensGraph-Extension) s implementac\u00ed dotazovac\u00edho 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