Un database manejimendi system Icho chinhu chakakosha kana iwe uchida kushandisa sisitimu, dzidza zvese zvine hukama nazvo muchinyorwa chino.
Sisitimu dzakasiyana dzevatariri ve database. uye chidimbu chayo iSGBD.
Chii chinonzi database management system?
Iwo mapurogiramu akasiyana kana software yakagadzirirwa kugadzira kana kubata nenzira yakanakisa iyo data rakasiyana iro rinoshandiswa, kugadzira bhangi kana dhatabhesi. Dhatabhesi zvitoro zveruzivo nezve zvese zvinogadzirwa nemushandisi kana nesisitimu pachayo.
Ndezvipi izvi?
Iwo mafomu ayo anoshanda sehwaro hwekugadzirwa kweaya mashopu edata, zvakare bvumira munhu kuti agone kugadzirisa nekushandisa ruzivo rwese sezvavanoda. Iko kunatsurudzwa kwemashopu edata kunogona zvakare kupihwa nehurongwa hwemitauro, yekugadzirisa kwakazara.
DBMS yakakwana kudzoreredza ruzivo rwakarasika, kana ikabviswa netsaona kana hutachiona hwakakuvadza chikamu chehurongwa. Kazhinji, vane zvishandiso zvinotsigira mashandisiro avo, zvichiita kuti zvive nyore kuti mushandisi ave nemishumo kuitira kana paine chero mhando yekukanganisa uye, mukuwedzera, inomiririra ruzivo nenzira dzekuona.
Zvakanakira zvishandiso izvi kugona kwavo kukuru kupinda kwevashandisi vakasiyana, avo vasingazove nedambudziko kupinda muchirongwa. Nekudaro, ruzivo rwese rwuripo mumabheseti aya rwakavanzika zvachose, kunzvenga kupindirwa nevechitatu.
Dzinogona kushandiswa kupi?
Dhatabhesi masisitimu ane zviwanikwa zvakanyanya nekuda kwemabasa avo makuru. Ivo vanowanzo shandisa yakawanda ye RAM uye yekuchengetedza memory, nekuda kweizvi zvinokurudzirwa kushandisa ndangariro nekaviri kugadzirisa uye ine yakawanda memory.
Iyo sisitimu inogona kuchengetwa paNAS, DAS, uye SAN. Iyo NAS yekuchengetera sisitimu inochengetera ruzivo rwese padandemutande, iyo DAS inoshanda seyakaomarara dhisiki yekuchengetera uye iyo SAN inochengeterwa inogadzirwa nema software mapurani, ayo akagadzirirwa kuchengetedza zvese zviri muchirongwa.
Chii chinogadzira dhatabhesi manejimendi system?
Iyo DBMS, ichive yakasarudzika sisitimu yekugadzira uye kuchengetedza ruzivo, inoda zvakasiyana zvikamu kubatsira pakubata kwayo: injini sisitimu, dudziro yedata, manejimendi system, application chizvarwa system uye manejimendi system.
motokari
Iye ndiye anoita zviito zvinokumbirwa kubva kudhatabhesi manejimendi system, kugona kupinda mudhatabhesi uye kubata ruzivo, kusvika pakukwanisa kumiririra data rakachengetedzwa.
Dhata inotsanangura system
Iyo dudziro yedata ndiyo inovandudza maduramazwi eiyo yakachengetedzwa ruzivo uye, zvakare, inobvumira iyo ruzivo kurongeka mumafaira.
Kubata system
Iyo yakakosha yekumanikidza system inobvumidza shanduko yeruzivo, ndokuti, inogona kugadziriswa, kubviswa kana kuchinjwa kubva ku database. Ndiko kwekutanga kusangana kune mushandisi, nekuti wekutanga kuonana kushandisa ruzivo aripo pano.
Kunyorera jenareta system
Iyo yekushandisa jenareta sisitimu inobvumidza kuburitswa kwemapurogiramu, nekuti inoshandisa programmodhi makodhi uye dhata nzvimbo, ndiko kuti, iyo inobvumidza kuzadzikiswa kuzere kwesarudzo yese.
Kutungamira system
Kubva pano ruzivo rwese rwuri mu data system rwunobatwa, zvichipa mushandisi mukana wekuita zvichemo kana kudzoreredza rumwe ruzivo kana rwakarasika.
Dhatabhesi maneja system mhando
Kune akasiyana marudzi ehurongwa hwe manejimendi kune iyo dhatabhesi, ine akasiyana maitiro uye mashandiro, ayo pakupedzisira anozobvumira kuumba iro ruzivo rwechitoro.
Microsoft SQL Server
Iyo dhata manejimendi sisitimu, iyo inosanganisirwa neWindows inoshanda sisitimu, nekudaro ichive chishandiso icho Microsoft yatove inopa sevhisi. Yayo kodhi mutauro kuti ushande sehwaro ndiTransact-SQL, unova mutauro wakatsvaga wekutsvaga, uyo unobvumidza kuve neodha yekuvakwa kwesystem.
Iyo SQL Server haina kunetsa kushandisa, nekuti inoshandisa chinoonekwa svikiro kuratidza chiitiko chinoitwa nesisitimu uye dhatabhesi. Zvakare, nekuda kwekubatana kwayo neWindows, inobvumidza kuwedzera iyo sisitimu yekushandisa uye kuchengetedza ruzivo rwunoshandiswa.
SQL Server manejimendi manejimendi inochengetedza uye inopa ruzivo rwemhando yepamusoro, pasina zvikanganiso kana zvipingaidzo. Kana kukanganisa kukaitika, zvinokutendera kuti umise zvakare data uye sarudzo dzekugadzirisa chero matambudziko.
PostgreSQL
Iyo yakavhurika sosi dhata manejimendi system, ndiko kuti, inogona kushandurwa kuitira kuti dhatabhesi igadziriswe. Iko kutarisisa kwayo kwakanangana nechinhu, ndokuti, zvisiri-zvechokwadi zvinoreva izvo zvinoteedzera kuteedzera chimwe chinhu chaicho; ruzivo apa rwunoonekwa.
Nekuda kwenzvimbo yayo yakavhurika, inobvumidza huwandu hweruzivo kuti ishandiswe pasina kudzikisira system. Mutauro wayo wepurogiramu wakasiyana uye, nekuda kwekusimudzira kwayo, inoshandisa kudzora kwakawanda, uko kunogonesa sevha zvirinani.
Nekuda kwehukuru hwayo hukuru, inofanirwa kushandisa injini inoibvumira kuti ive iyo inogadzirisa ruzivo rwese uye, pamusoro pezvo, inogadzirisa zvese zvayinoita. Iyo inobvumidza kushandisa mitauro mune bhanari uye hexadecimal kodhi, kuitira kuti chirongwa chisakwaniswe.
Ndiyo yakanyanya kudhura kodhi, ichibvumira chero munhu kuishandisa uye kushanda pairi. Uye zvakare, iyo inobvumidza kushanda nemapuratifomu akasiyana kana masystem ekugadzirisa masisitimu, kuve nyore kushandisa.
MySQL
Iyo ndeimwe yeakakwana uye ari nyore-kushandisa-data manejimendi masystem, nekuti inochinjika kune zvinodiwa nevanhu. Nekuti zviri nyore kudzora, mushandisi anogona kugadzira dhatabhesi rakaringana yavo webhu kunyorera, ichibvumira vanhu kubata uye kuisa iyo data pasina chero dambudziko uye kusagadzikana.
MySQL inoenderana neese mitauro yekodhi, ichibvumira kurongeka kuri nani kweiyo dhatabhesi system. Nekuti iyo system yakagadziridzwa, dzakasiyana data dzinogona kushandiswa kana kugadziriswa panguva imwe chete.
Chinhu ichi chinobvumidza vanhu vanoverengeka kutora chikamu mukugadziriswa kana kushandisa kodhi yekodhi pasina iko kunyoreswa kwekushandisa.
Kana iwe wakafarira chinyorwa ichi, ndinokukoka iwe kuti uverenge: «Chii chinonzi MVC? Svika pakuziva iyi software yekuvaka! », chinyorwa chakazara pane iyi mhando ye software uye kuti inoshanda sei.
https://www.youtube.com/watch?v=4BjnytBHqwI