Ndi deta chiyani? mitundu deta

Data - zosiyanasiyana mitundu ya nkhani, systematized mwa magawo ena kudzera mawonekedwe. ndi deta chiyani? Conventionally, izi ndi zonse zimene angathe otero, ndi mwachidule, pano mu mawonekedwe a ndondomeko yeniyeni kapena mwa mitunduyi kapena mawu M'ndandanda. Kuti ndi zinthu zonse inayake nkhani dera, sipangakhalenso anaikidwa chitsanzo kapena masanjidwewo.

ntchito

Anavomera kupereka Mitundu deta zochokera makhalidwe awo zinthu (manenedwe) ndi ntchito kuti angathe kuchitidwa ndi iwo. Ambiri ntchito n'zosangalatsa kumva deta, ndalama, chikhalidwe, nthawi ndi tsiku.

Base: tanthauzo ndi mbiri

Nawonso achichepere (DB) - akonzedwa deta amagwiritsidwa ntchito mogwirizana mulingo woyenera ndi kupeza mwayi mwamsanga iwo. Zimenezi zimathandiza wosuta ntchito ndi mabuku lalikulu la chuma zambiri, kuthera osachepera nthawi ndi khama. Base - chinthu zikusintha uliri ndi ulemu kwa deta analowa. Ubwino chofunika kwambiri ndi maziko a chakuti pamene ntchito zambiri tilibe kufunsa funso, kodi deta, ndiponso kuti zimene iwo ayenera kuperekedwa? Onse chuma mudziwe, anayambitsa mu kompyuta, basi anagawira ndi systematized mu Nawonso achichepere. zikamera The akhoza zimachitika 1955, pamene taphunzira pokonza deta ndi programmable file chitsanzo ndi kuzisunga pa makadi nkhonya.

Mitundu ya zinasokoneza makompyuta ndi ntchito zawo

Zinasokoneza makompyuta ndi centralized ndi kugawa. The Nawonso achichepere centralized ndi umodzi bungwe dongosolo, kupita kumene mu uthunthu wake kuchokera kompyuta. Nawonso achichepere anagawira wapangidwa zigawo anthuwo zasungidwa pa makina mosiyana maukonde. uthenga uwu pamodzi ndi njira yapadera ulamuliro.

m'munsi akhoza zosiyanasiyana ndi malo, ndipo iwo akhoza kukhala m'dera kapena maukonde. Monga yosungirako mudziwe ntchito kukumbukira Link (litayamba molimba), kapena kuwala kukumbukira zimbale Seva.

ntchito iliyonse deta akutsatiridwa mwa machitidwe ulamuliro - zochitika zapadera. Amachita zinthu zotsatirazi:

• kulenga Nawonso achichepere ndi;
• okhutira;
• yosungirako;
• kupeza chitetezo ndi deta zachinsinsi;
• deta kuyenda ndi anzake awo ndi mapulogalamu ena;
• kusintha;
• kufufuza;
• mapangidwe yomaliza ya mayankho kwa pempho.

Cholinga ntchito dongosolo lililonse ulamuliro akhoza ankaimira motere: chilengedwe cha Nawonso achichepere watsopano - deta kulowa ndi kusintha - processing wa uthenga Nawonso achichepere ndi (kuti ndi deta deta kuti alipo mu m'munsi, monga iwo akhoza m'magulumagulu) - zotuluka.

Tebulo deta kapangidwe

Kuti kusunga malangizo mu tebulo Nawonso achichepere deta ntchito. Chotero eg n'kofunika kudziwa adiresi deta mu Nawonso achichepere, izo kwaiye ndi mphambano ya mizere ndi mizati tebulo. Kapangidwe Nawonso achichepere ndi chinaneneratu minda (mizati), ndi ochititsa - zolemba (mizere).

ndi deta chiyani? Kodi zosintha zomwe zingagwiritsidwe mmalo pankhani zina. Minda analengedwa ndi mitundu ina ya deta: tsiku ndi nthawi, integers, mayunitsi ndalama, zizindikiro. munda wina ali katundu yekha zimadalira mtundu wa deta athandizira, ntchito zimene tingachite ndi iwo, ndipo chiwerengero cha anthu otchulidwa athandizira. Field mukhoza mwachindunji dzina ndi siginecha, kutalika, ndi makhalidwe ena. Ndiyamika sayansi yamakono Nawonso achichepere ntchito ndondomeko zambiri wakhala mwamsanga ndi yabwino, ndi zamakono zomwe zikugwira ntchito imeneyi, anagula maonekedwe yaying'ono ndi kupezeka kwa dongosolo lililonse kulamulira.

Tikukhulupirira mudziwe anapatsidwa m'nkhani adzakhala othandiza.