The inonyanya tsika ndiko kuva Database?

Kushanda pamwe chete Database riri pamwe zvakare kana zvishoma kunzwisisa chirongwa. Db anoita somunhu dzigare mairi mashoko, iro rine zvose zvakafanira parameters kuti zvakarurama kushanda wegadziriro. Uye chii kubudirira ndiwo rakajairika uchidzidzira? Kana vari kushandiswa? Izvi uye nemimwe mibvunzo ichapindurwa munyaya ino.

Vhuṱanzi

Saka, kutanga unofanira kuona kuti, chii chirongwa mubvunzo. Database - zita nokuda yakarongeka kuchengetera zvemasanga mashoko. Rinogona kurongwa kwete chete kubatsirwa IT-ruzivo pamwe asiwo dzimwe nzira uye nzira. Asi panguva imwe chete sezvo zvitsigiro kuti kushandiswa systematize musimboti.

Zvinofanira kucherechedzwa kuti arayira uye kuchengetedzwa mikana aya amaguta. Imwe neimwe nzira akaisa mberi chaizvo zvinodiwa. Pane Databases kuti inoitirwa kuti ishande autonomously mukati chete kombiyuta. Other kuriritira kudyidzana pamwe kure Server. Kana isu kutaura pamusoro mapurani, Zvinonyanyozivikanwa hierarchical uye nomumbure Databases. Munyaya ino, ndiye anoonesa vachava.

Hierarchical Database

The Hurongwa architecture iyi, anogovera kuti mumwe chinhu anomiririrwa sechinhu chaicho isangano. Nokuda kwaizvozvi inogona kuva mubereki kana mwana zvinhu. Chimwe chinhu chinokosha mapurani ichi ndechokuti tinofanira kuva chimwe chinhu kubva izvo zvose kunotanga. Tuso marongerwo chinoratidza muti. Nzwisisa kuti sangano rinogona kubatsira chirongwa anenge makumi chero. Mujinga kwakadai date - ndiro zvakare faira ezvinhu pakombiyuta.

Zvinowanzotaurwa kuti kushandisa mamiriro kwakadaro hakusi chinhu chinobudirira. Kunyange zvakadaro, rinoshandiswa zvichiri nevakawanda. Izvi imhaka yokuti basa pamwe Database kunobatsira kana zvakakodzera chikuru kuverenga mashoko. Zvechokwadi, muchiitiko ichi, kuti mamiriro ari chaizvo hwezvekukurukurirana yokuvaka. Somuenzaniso, ngationei ichi: patinosarudza chairo forodha, kubata anotora nokukurumidza nenzvimbo. Asi kana isu tatanga vachiongorora Antivirus kombiyuta, ruchapinda yakareba chaizvo nguva.

Network Database

mhando iyi nadzurudzo muenzaniso, akatsanangura kare. Musiyano mukuru pano inhamba Links. Saka, muna hierarchical Databases anopiwa kuti chimwe chinhu chinogona kuva mubereki mumwe chete. Saka, tinogona kutaura nezvomumwe nekurovererwa iri kukura Database. Network Database anogona kuva vabereki vakawanda. Izvi zvikurukuru rinoreva nokuumba Database inobva XML.

ndeyeukama Databases

Rakajairika vari tsika, kana pamusoro pezvatinotaura vakawanda kushandiswa, fora uye zvichingodaro. Chikonzero kukurumbira yavo kuti hukama Databases vari nyore zvikuru kurondedzera mu masvomhu. Nemhaka Implementation rwakazorora, uye ivo zvakapararira.

Yokungotaura hwaro pavo akataura yemasvomhu Edgar Frank Codd (zvino akashayika). Akanga ari eighties aigona zvikuru kwazvo uye zvakarurama kurondedzera nemamiriro Database, achishandisa mutauro wemasvomhu. Asi sezvo tsika inoratidza kudzidza uyu hwaro rakanaka usashandisa Implementation. Ndeyeukama Databases zvazova akurumbira zvokuti kana kutaura Database, kuti default ndiko kunzwisisa navo. Ngationei teerera, uye avo chaiyo Implementation.

Zvinoumba ndeyeukama Databases

Dzavo chikuru runoratidza ndechokuti mashoko inochengeterwa sezvo chine mbiri-dimensional pamatafura. Sezvo muenzaniso nyore unogona kupiwa Access Database, nhengo muhofisi Suite kubva Microsoft. In basa Arifa naOmega-kushandiswa mbiru uye mitsara. First chinhu ndechokuti kuburikidza kwavo munda zita chaiyo, mashoko mhando, izvo zvinoshandiswa mazviri. Mukuwedzera, nhamba yembiru wakasimba, uye unogona chete kushandurwa pamwe mutarisiri Database. Mutsetse uri - ndiwo mashoko zvinhu. nhamba yavo nechakatsinhiwa tichishandisa nyore nokuvapa mirayiridzo inokosha.

Zvinofanira kunzwisiswa kuti Database ndiyo husingaoneki pfungwa. Saka, vakawanda vari tsika, muri Databases umo matafura zvinesungano. Very zvakanaka mufananidzo graphical panyaya iyi vanogona kupa yambotaurwa Access. The chinokosha zvikuru basa iri pamasikiro chacho. Izvi ndizvo kusika zvinhu zvataurwa pamusoro apa. Zvinofanira kucherechedzwa kuti iri mudariro zvakaoma, izvo beginners zvakawanda kurerutswa. Uye nokuda kwechikonzero chakanaka. Zvechokwadi, kusvikira mashoko ari muduku, kombiyuta zvichabviswa kupatsanurwa nokukurumidza. Asi sezvo uwandu mashoko kukura ari tava kuderera chaizvo. Its anokosha Proportional kuti kukura zvakachengetwa umboo uye Zvakanyanya Kunaka Panguva Yepamuviri pamasikiro mamiriro zvakananga.

Database patani

Saka, zvatakurukura inonyanya kufarirwa dzakasiyana pamusoro Database. Ikozvino ngatitaurei pamusoro chinhu iyo anosvika rakajairika mune tsika vari apo vari zvakasikwa uye nei zvakadaro. Somuenzaniso, funga MySQL. Saka, mugumo mugumisiro une zvinotevera zvinodiwa:

• Database kunge nyore chinhu tichitarisa kugadzira.
• The Database kuva duku.

Kana iwe uri vakajaira nyore kuona kuti izvi pfungwa dzinopesana. Tinofanira kutanga kunzwisisa chaizvo chii chichakurukurwa vakapfuura kusvikira Database uye kutorwa kubva pairi. unogona kuwana dzakawanda uye mazana matafura ane incredible uwandu nzvimbo zvikuru muzvirongwa. Zvinotevera nyaya anofanira kuongorora:

1. Kusarudza chii date zvichabviswa kuchengetwa.
2. Tsvagurudza apo mashoko zvichabviswa re.
3. Sarudzai chii date mhando kunhonga imwe mbiru.

Kuparara zvinogona kushandiswa kuderedza mutoro pamunhu pamatafura. Asi hanya anofanira kutorwa kuti zvimwe vabatane zvinoriumba.

mhedziso

Databases zvinokosha zvinoumba zvakare kana zvishoma kunzwisisa chirongwa. Pakutanga, iri tsika munhu haagoni kuwana kuronga Zvakanyanya Kunaka Panguva Yepamuviri kubatana. Asi nokufamba kwenguva, kudzidzwa unyanzvi uye kuwedzera ruzivo unogona kuva achasika zvivako nani.

Uyewo, rirege kuraswa hanya uye kuti zvishoma nezvishoma kupa zvakawanda yepamusoro-software mamiriro. Uyezve, zvose rubatsiro zvinobvira muna Optimization uye rinogona Database utariri enyika. Zvavanokupai yokuvaka pamwe navanopinda functionality, naro raishanda basa ose kunogona kuitwa. A siyana Database rakanyatsojeka guru, saka unogona kusarudza chaizvo chii dzingafarirwa.