{"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\/sk\/blog\/news\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","title":{"rendered":"Pre PostgreSQL bolo pripraven\u00e9 roz\u0161\u00edrenie AGE na ukladanie d\u00e1t vo forme grafu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pre PostgreSQL bola navrhnut\u00e1<\/a><\/noindex> roz\u0161\u00edrenie AGE (AgensGraph-Extension) s implement\u00e1ciou dotazovacieho jazyka openCypher<\/a><\/noindex> na manipul\u00e1ciu s usporiadaniami vz\u00e1jemne prepojen\u00fdch hierarchick\u00fdch \u00fadajov vytv\u00e1raj\u00facich graf. Namiesto st\u013apcov a riadkov grafovo orientovan\u00e9 DB pou\u017e\u00edvaj\u00fa \u0161trukt\u00faru podobn\u00fa sieti \u2014 stanovuj\u00fa uzly, ich vlastnosti a vz\u0165ahy medzi uzlami. AGE distribuovan\u00fd<\/a><\/noindex> s licenciou Apache 2.0, poskytnut\u00e9 spolo\u010dnos\u0165ou Bitnine pod z\u00e1\u0161titou Apache Foundation a moment\u00e1lne umiestnen\u00e9 v Apache Incubator. <\/p>\n

Projekt pokra\u010duje vo v\u00fdvoji DBMS AgensGraph<\/a><\/noindex>, ktor\u00e1 predstavuje<\/a><\/noindex> je prepracovan\u00e1 verzia PostgreSQL na spracovanie grafov. K\u013e\u00fa\u010dov\u00fdm rozdielom je implement\u00e1cia AGE ako univerz\u00e1lneho roz\u0161\u00edrenia, ktor\u00e9 funguje ako nadstavba nad \u0161tandardn\u00fdmi verziami PostgreSQL. Ned\u00e1vno publikovan\u00e1 verzia Apache AGE 0.2.0<\/a><\/noindex> podporuje pr\u00e1cu s PostgreSQL 11.<\/p>\n

V aktu\u00e1lnom stave AGE podporuje<\/a><\/noindex> tak\u00e9 mo\u017enosti jazyka dotazov Cypher, ako je pou\u017eitie v\u00fdrazu \u201eCREATE\u201c na definovanie uzlov a v\u00e4zieb, v\u00fdraz \u201eMATCH\u201c na vyh\u013ead\u00e1vanie \u00fadajov v grafe pod\u013ea dan\u00fdch podmienok (WHERE), v ur\u010denom porad\u00ed (ORDER BY) a so stanoven\u00fdmi obmedzeniami (SKIP, LIMIT). V\u00fdsledn\u00fd s\u00fabor \u00fadajov, ktor\u00fd sa vracia dotazom, je definovan\u00fd pomocou v\u00fdrazu \u201eRETURN\u201c. Na spojenie nieko\u013ek\u00fdch dotazov do re\u0165azca je dostupn\u00fd v\u00fdraz \u201eWITH\u201c. <\/p>\n

Mo\u017eno vytv\u00e1ra\u0165 multimod\u00e1lne DB, kombinuj\u00face modely hierarchick\u00e9ho ukladania vlastnost\u00ed vo forme grafu, rela\u010dn\u00fd model a model na ukladanie dokumentov vo form\u00e1te JSON. Podporovan\u00e9 s\u00fa integrovan\u00e9 dotazy, ktor\u00e9 obsahuj\u00fa prvky jazykov SQL a Cypher.
\nJe mo\u017en\u00e9 vytvori\u0165 indexy pre vlastnosti uzlov a hr\u00e1n grafu.
\nNa pou\u017eitie je navrhnut\u00e1 roz\u0161\u00edren\u00e1 sada typov Agtype, ktor\u00e1 obsahuje typy pre hrany, uzly a cesty v grafe. Agreg\u00e1tne v\u00fdrazy zatia\u013e nie s\u00fa implementovan\u00e9. Medzi dostupn\u00fdmi \u0161pecializovan\u00fdmi funkciami s\u00fa: 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\udd47Pre PostgreSQL bolo pripraven\u00e9 roz\u0161\u00edrenie AGE na ukladanie \u00fadajov vo forme grafu | ProHoster","description":"Pre PostgreSQL je navrhnut\u00e9 roz\u0161\u00edrenie AGE (AgensGraph-Extension) s implement\u00e1ciou dotazovacieho 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