{"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\/sl\/blog\/news\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","title":{"rendered":"Za PostgreSQL je pripravljena raz\u0161iritev AGE za shranjevanje podatkov v obliki grafa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Za PostgreSQL je predlagan<\/a><\/noindex> dodatak AGE (AgensGraph-Extension) s implementacijom jezika upita openCypher<\/a><\/noindex> za upravljanje seti povezanih hijerarhijskih podataka koji \u010dine graf. Umesto kolona i redova, graf-oriijentisane baze podataka koriste strukturu sli\u010dnu mre\u017ei \u2014 defini\u0161u se \u010dvorovi, njihova svojstva i me\u0111usobni odnosi. AGE se distribuira<\/a><\/noindex> je pod Apache 2.0 licencom, predao ga je Bitnine uz pokroviteljstvo Apache fondacije i trenutno je sme\u0161ten u Apache inkubator. <\/p>\n

Projekat nastavlja razvoj sistema za upravljanje bazama podataka AgensGraph<\/a><\/noindex>, koji predstavlja<\/a><\/noindex> je revidirana verzija PostgreSQL prilago\u0111ena za obrada grafova. Klju\u010dna razlika je implementacija AGE kao univerzalnog dodatka koji funkcioni\u0161e kao dodatak zvani\u010dnim izdanjima PostgreSQL-a. Nedavno objavljeno izdanje Apache AGE 0.2.0<\/a><\/noindex> podr\u017eava rad sa PostgreSQL 11.<\/p>\n

U trenutnom stanju AGE podpira<\/a><\/noindex> takve mogu\u0107nosti jezika upita Cypher, kao \u0161to su primena izraza \u201eCREATE\u201c za definisanje \u010dvorova i veza, izraz \u201eMATCH\u201c za pretragu podataka u grafu prema zadatim uslovima (WHERE), u odre\u0111enom redosledu (ORDER BY) i sa postavljenim ograni\u010denjima (SKIP, LIMIT). Rezultantni skup podataka koji vra\u0107a upit defini\u0161e se pomo\u0107u izraza \u201eRETURN\u201c. Za povezivanje vi\u0161e upita u lanac dostupno je izraz \u201eWITH\u201c. <\/p>\n

Mogu\u0107e je kreirati multimodelne baze podataka koje kombinuju modele hijerarhijskog skladi\u0161tenja svojstava u obliku grafa, relacijsku mre\u017eu i model skladi\u0161tenja dokumenata u JSON formatu. Podr\u017eano je izvr\u0161avanje integrisanih upita koji uklju\u010duju elemente jezika SQL i Cypher.
\nDostupno je kreiranje indeksa za svojstva \u010dvorova i ivica grafa.
\nZa kori\u0161\u0107enje je ponu\u0111en pro\u0161ireni set tipova Agtype, uklju\u010duju\u0107i tipove za ivice, \u010dvorove i puteve u grafu. Agregatne izraze trenutno nije mogu\u0107e koristiti. Me\u0111u dostupnim specijalizovanim funkcijama su: 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

Izvor: 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\udd47Za PostgreSQL je pripremljen dodatak AGE za skladi\u0161tenje podataka u obliku grafa | ProHoster","description":"Za PostgreSQL je predlo\u017een dodatak AGE (AgensGraph-Extension) s implementacijom jezika 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