Kusungulumwa kumayendetsa momwe komanso kusintha kumapangidwira mu database
Kusungulumwa ndi mbali yofunika kwambiri ya malo ogulitsira malonda. Ndi katundu wachitatu wa ACID (Atomicity, Consistency, Isolation, Durability) ndipo izi zimatsimikizira kuti deta ndi yosagwirizana ndi yolondola.
Kusungulumwa ndi katundu wachinsinsi wa malo omwe amalamulira momwe angasinthire komanso pamene akuwonekera. Chimodzi mwa zolinga zodzipatula ndicho kulola kuti ntchito zambiri zichitike panthawi imodzimodzi popanda kuthandizana.
Momwe Kusungunula Kumagwirira Ntchito
Mwachitsanzo, ngati Joe akugulitsa ntchito yosungirako deta panthawi imodzimodziyo kuti Mary akupereka zosiyana, zonsezi ziyenera kugwiritsidwa ntchito pazomwezi. Mndandanda wa makinawo ayenera kuchita Joe ntchito yonse asanachite Mary's kapena vice-versa. Izi zimalepheretsa kugulitsa kwa Joe powerenga deta yapakati yomwe imapangidwa ngati mbali imodzi ya gawo la Mary zomwe sizidzatsimikiziridwa ku database. Dziwani kuti malo osungulumwa sakuonetsetsa kuti ntchito yoyamba idzachita chotani, koma kuti sangasokonezane.
Miyeso Yopatulira
Pali magawo anayi a kudzipatula:
- Zovuta kwambiri ndilo mlingo wapamwamba kwambiri, zomwe zikutanthauza kuti malondawo adzatsirizidwa ntchito ina isanathe kuyamba.
- Mawerengedwe obwerezabwereza amavomereza kuti zogwirizanitsa zitheke pomwe ntchitoyo yayamba, ngakhale kuti isanathe.
- Kuwerenga kudzipereka kumapangitsa kuti deta ifike pambuyo poti deta yapangidwa ku databases, koma pasanapite nthawi.
- Werengani osagwiritsidwa ntchito ndi njira yochepetsera yokhayokha ndipo imalola kuti deta ifikepo asanasinthe.