Chinyorwa ichi Dhatabhesi yemunda mhando, Ine chinangwa chekupa muverengi ayo akajairika uye anoshandiswa mumunda wehurongwa.
Mhando dzeminda mudhatabhesi
Tisati taziva kuti ndedzipi mhando dzemunda mudhatabhesi, isu tinotanga kuti dhatabhesi (BBDD), inoreva nhevedzano yedata rakafanana uye rakanyoreswa nenzira yakarongeka inozogadziriswa, kugadziriswa kweiyi data, zvinoenderana nezvinangwa zvakagadzirirwa kuzadzisa chigadzirwa.
Dhatabhesi yakaumbwa nematafura akasiyana ayo ane chinangwa chekunyoresa zvinoenderana nebasa rehunhu hwavo hwavakagadzirirwa.
Tinokurudzira chinyorwa chinotevera Dhata mhando mune mysql.
Hunhu hwehunhu hwakanyorwa mune yega yega minda hunofanirwa kutariswa, dhatabhesi rinoshanda neruzivo rwakasiyana, zvakakosha kuti uzive kuti inofanirwa kuratidzwa kuti ndeupi rudzi rwekukosha rwakapinda, runogonesa kutsvaga mune ramangwana uye tora mhedzisiro yakanaka kubva mundangariro.
Iwo anozivikanwa kwazvo dhatabhesi munda mhando anoratidzwa pazasi, anoti:
Alphanumerics
Ivo vese vane manhamba uye mavara, vanogona kumiririrwa nenzvimbo yemavara makumi maviri nemaviri.
Kuverenga
Sekureva kwenhamba, iwo emhando dzakasiyana, kunyanya manhamba asina madhisimari, uye nhamba chaidzo dzinomiririrwa nemadimikira.
Booleans
Idzi ndidzo ndima dzakanyoreswa nzira mbiri: Hongu kana Kwete, ichokwadi kana kunyepa.
Mazuva acho
Idzi ndidzo minda dzakagadzirirwa kunyora misi, iyo inofambisa kushandiswa kwavo gare gare; kuchengetedza mazuva nenzira iyi kunopa mukana wekugadzirisa zvinyorwa nemazuva kana kuverenga mazuva ari pakati pemazuva.
Iwo maMemos
Inoreva kune alphanumeric minda ine nzvimbo dzisingagumi, zvisinei chipingamupinyi chavanacho ndechekuti havakwanise kunyoreswa.
Iwo anozviwedzera iwo
Aya ndiwo manhamba akakwana manhamba anowedzera kukosha kwawo nechikamu chimwe chete pachinyorwa chimwe nechimwe chakaiswa, bhenefiti yavanopa ndeyekuti vanoshanda sechiratidzo, nekuti ivo vakakosha kune imwe rekodhi.