Database - uhlelo lokuphathwa idatha

Laba yibo bonke abasizungezile. Eza ngokusebenzisa abezindaba, elinde nathi emsebenzini, ezintweni zokuhamba zomphakathi, ngisho ekhishini. Njengoba wonke umuntu okhona njalo ebhekene omningi ulwazi analo ukuze baphathe ngayo izenzo ezihlukahlukene: buthelela kanye nokugcina, ukuze ukhethe izinto ezibaluleke kakhulu, hlunga, futhi bahlele ngayo ngezinye izindlela, susa. Ukuze ukushintsha inqubo, futhi semininingwane zenzelwe. Ngokucabangela umbono yemininingo egciniwe - uhlelo ukuhlela idatha.

Kuyini database

I database kubhekwa ukuba ibe amalungu afanayo ngaphambilini kolwazi. Isibonelo umtapo semininingwane ihlelwa enjalo ongakhonza. Ngo izincwadi zakhe ngokuvamile etholakala umyalelo othize ngesihloko, lombhali noma kuye ngale ndaba. Ngokwesiko, idatha isethulo lula, sebenzisa ifomu etafuleni. Amaseli ezibekwe izinombolo zayo, umbhalo, izithombe kanye nezinye izakhi. A kanye nemigqa ziqukethe ezinye izimpawu, okuyinto eyenzeka nokulandelanisa. Indaba ebaluleke kakhulu ukwakhiwa kahle database ukuthola iqoqo izici obuvamile isihloko sendawo ethile. Lokho, kuye amagugu kwalezi zimfanelo zihlukaniswe izimo ngamunye inhlangano ethile.

Uyini DBMS

Database - othile uhlelo egciniwe. Iqiniso lokuthi idatha akwanele nje ukuze uthole kubo udinga njalo zikhiqiza imisebenzi. Okokuqala, ukwaziswa okukhona ngaphambilini ukuba agcinwe. Futhi esikhathini esizayo uma udinga ukwenza kanjani idatha ingatholakala ngokushesha, edinga umsebenzisi ngesikhathi kunikezwa isimo samanje. Kuze kube yimanje, uhlelo lokulawula kumele abe ezithile ubuchule obuphezulu ukuhlunga, kanye nekhono ukusebenzisa ezihlukahlukene ehlunga. Idatha ke kudingekile ukuba engeza, susa, hlela, nokunye. Ukuze kube lula ezisebenza ezihlukahlukene ulwazi, kubalulekile ukuthi uhlelo ezinjalo kuzovumela abasebenzisi ukwakha khetha umbuzo elifanayo, "ukwazi" ukugcwalisa lezi zicelo ngokushesha futhi stably. Nge ukwakhiwa kahle lolu semininingwane osinikeza futhi sinika amandla idatha evikelekile kusukela ukufinyelela okungagunyaziwe namanye amathuluzi imisebenzi edingekayo.

Kungani Mysql semininingwane

Mysql - indlela yokuphatha semininingwane zingubudlelwane. Zingubudlelwane ucingo isizinda esinjalo lapho ulwazi umelwe ngesimo amatafula ehlukene, okuyinto kuhlobene futhi bancike komunye nomunye. Kusukela nezinye yolwazi Loku kuhlukile izici ezimbalwa eziyisisekelo, okuyilezi:

- multithreading, ie ngesikhathi esifanayo kulesi simiso ingaqalisa imibuzo amaningi;

- lula yokwakhiwa kuseva;

- okuthembekile Ukuvikelwa uhlelo ehlanganisa isakhiwo nezimo amaphasiwedi namalungelo;

- ikhono lokusebenzisa idatha kokubili fixed kanye nobude variable;

- Isitoreji izinga uhlelo esekelwe notshwala;

- kungenzeka ihlanganise 16 okhiye ethebuleni.

Kukhona nezinye izindawo umehluko obalulekile, ezifana yokuthi database kukhona inhlangano ukulungisa amatafula.

Mysql, njengendlela database, kulula futhi kunengqondo, uhlelo evumela ukuthi wena ukwenza yonke imisebenzi ezidingekayo ku idatha.