{"id":112886,"date":"2024-01-13T11:28:03","date_gmt":"2024-01-13T09:28:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-subd-firebird-5-0"},"modified":"2024-01-13T11:28:03","modified_gmt":"2024-01-13T09:28:03","slug":"vypusk-subd-firebird-5-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/vypusk-subd-firebird-5-0","title":{"rendered":"Izdaja SDB Firebird 5.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po dveh letih in pol razvoja je bila predstavljena izdaja relacijske SDB Firebird 5.0. Firebird nadaljuje razvoj kode SDB InterBase 6.0, ki jo je leta 2000 odprla dru\u017eba Borland. Firebird se \u0161iri pod odprto licenco MPL in podpira standarde ANSI SQL, vklju\u010dno s funkcijami, kot so spro\u017eilci, shranjene procedure in replikacija. Binarne zbirke so pripravljenje za Linux, Windows, macOS in Android.    <\/p>\n<p>Klju\u010dne novosti:  <\/p>\n<ul>\n<li class=\"l\"> Omogo\u010deno je izvajanje operacij v ve\u010dnitnem na\u010dinu. Paralelizacija v ve\u010d nitih se uporablja pri ustvarjanju indeksov, zbiranja smeti (samodejne in ro\u010dne operacije sweep), ustvarjanju varnostnih kopij in obnovitvah iz njih. gfix -sweep -parallel 4 dbname gbak -b -par 4 -user username -pass password dbname backupname\n<li class=\"l\"> Dodana je podpora za delne indekse, ki vklju\u010dujejo le izbrane zapise, ki ustrezajo pogojem, dolo\u010denim pri ustvarjanju indeksa. CREATE INDEX IT1_COL ON T1 (COL) WHERE COL &lt; 100;\n<li class=\"l\"> V izrazih SELECT WITH LOCK, UPDATE in DELETE je uvedena sintaksa \u201eSKIP LOCKED\u201c, ki omogo\u010da izklju\u010ditev zapisov, za katere je ob po\u0161iljanju poizvedbe nastavljena zaklepanje (na primer, da ne \u010dakate na sprostitev zaklepa pri prekrivanju z drugo transakcijo).\n<li class=\"l\"> Dodana je mo\u017enost posodobitve baze podatkov na aktualno vmesno razli\u010dico skladi\u0161\u010da (ODS \u2014 On-Disk-Structure) v realnem \u010dasu (inline update) brez ustvarjanja in obnavljanja iz varnostne kopije. Na primer, zdaj lahko v realnem \u010dasu pretvorite bazo podatkov v formatu Firebird 4.0 (ODS 13.0) v format Firebird 5.0 (ODS 13.1).\n<li class=\"l\"> Uveden je predpomnilnik prevedenih SQL izrazov, ki ga samodejno upravlja (stari zapisi se \u010distijo po potrebi). Velikost predpomnilnika se dolo\u010di preko parametra MaxStatementCacheSize v firebird.conf.\n<li class=\"l\"> Dodano je vmesnik za profiliranje SQL in PSQL, ki omogo\u010da ocenjevanje \u010dasa izvajanja vsake poizvedbe, zbiranje statistike o \u0161tevilu poizvedb in prepoznavanje te\u017eav z zmogljivostjo.\n<li class=\"l\"> V izraz MERGE je dodana podpora za pogojni blok \u201eWHEN NOT MATCHED BY SOURCE\u201c, ki se aktivira, ko izvorni zapis ne ustreza nobenemu zapisu v ciljnem naboru. MERGE INTO customers c USING new_customers nc ON (c.id = nc.id) WHEN MATCHED THEN UPDATE SET name = nc.name WHEN NOT MATCHED BY SOURCE THEN DELETE\n<li class=\"l\"> Omogo\u010deno je vra\u010danje ve\u010d vrstic z izrazom RETURNING, \u010de DML-izraz zajema ve\u010d vrstic (prej se je v tak\u0161nih primerih pojavil napaka \u201emultiple rows in singleton select\u201c).\n<li class=\"l\"> Dodane so nove vgrajene funkcije: UNICODE_CHAR za vra\u010danje unicode znaka, ki ustreza dolo\u010denemu kodu, ter UNICODE_VAL za vra\u010danje kode za dolo\u010den znak. V funkcijah EXTRACT, FIRST_DAY in LAST_DAY je dodan parameter QUARTER za dolo\u010ditev \u0161tevilke \u010detrtletja.\n<li class=\"l\"> Dodana je nova sistemska paketa RDB$BLOB_UTIL z naborom operacij s BLOB-i za module PSQL.\n<li class=\"l\"> Izbolj\u0161an je algoritem za stiskanje zapisov, ki sedaj uporablja \u0161tevec spremenljive dol\u017eine za u\u010dinkovitej\u0161e pakiranje ponavljajo\u010dih se zaporedij podatkov. Optimizacija je omogo\u010dila bistveno pove\u010danje stopnje stiskanja nepopolnih dolgih polj VARCHAR s podatki v kodiranju UTF-8.\n<li class=\"l\"> Dodana je mo\u017enost dela z dvosmernimi kurzorji (scrollable) pri oddaljenem omre\u017enem dostopu do baze podatkov.\n<li class=\"l\"> Izvedena je optimizacija u\u010dinkovitosti kopiranja blobov.\n<li class=\"l\"> Dodana je popolna podpora za sintakso definiranja nizov, opisano v standardu SQL. Na primer, nizi zdaj lahko prekinjajo komentarji ali presledki: select \u2018ab\u2019 \/* comment *\/ \u2018cd\u2019 from RDB$DATABASE; select \u2018ab\u2019 \u2018cd\u2019 from RDB$DATABASE;    <\/ul>\n<p>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60430\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u0441 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u043e\u0439 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u0440\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 Firebird 5.0. Firebird \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043a\u043e\u0434\u0430 \u0421\u0423\u0411\u0414 InterBase 6.0, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0433\u043e \u0432 2000 \u0433\u043e\u0434\u0443 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Borland. Firebird \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MPL \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u044b ANSI SQL, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0442\u0430\u043a\u0438\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438, \u043a\u0430\u043a \u0442\u0440\u0438\u0433\u0433\u0435\u0440\u044b, \u0445\u0440\u0430\u043d\u0438\u043c\u044b\u0435 \u043f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u044b \u0438 \u0440\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u044e. \u0411\u0438\u043d\u0430\u0440\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u0434\u043b\u044f Linux, Windows, macOS \u0438 [&hellip;]<\/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-112886","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u0441 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u043e\u0439 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u0440\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 Firebird 5.0. 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