Dzidza kuti chii chinogadzira chinhu chakanaka kana chakakosha chinokosha mu database
Chii chinonyanya kukosha? Munyika ye databases , chinonyanya kukosha chetafura inoshamwaridzana inonyanya kuzivisa rega rega mutafura. Databases shandisa magetsi kuenzanisa, kutarisa, uye kuchengeta zvinyorwa, nekuumba ukama pakati pezvinyorwa.
Kusarudza kukosha kwekutanga mune imwe database ndeimwe yenhanho dzinokosha pane iyi. Iyo inogona kuva chiitiko chinowanzoitika icho chinopihwa kuva chakasiyana seSocial Security nhamba patafura isina zvinyorwa rimwe chete pamunhu mumwe nomumwe - zvichida - inogona kubudiswa nehurongwa hwekuchengetedzwa kwemasitadhi yakafanana nechitarisiko chaicho chepasi rose, kana GUID , mu Microsoft SQL Server . Zvimiso zvepamusoro zvinogona kunge zvine chimiro chimwechete kana kuti maitiro akawanda mubatanidzwa.
Zvinyorwa zvepamusoro ndezvenzvimbo dzakasiyana nedzimwe ruzivo rwakabatana mune mamwe matafura apo kona yekutanga inoshandiswa. Inofanira kunge yakapinda apo rekodhi yakasikwa, uye haifaniri kuchinjwa. Tafura imwe neimwe mubhuku re database rine korona kana maviri zvakananga yekona yekutanga.
Primary Key Example
Fungidzira iwe une tafura dzevadzidzi DZIDZIDZO dzine zvinyorwa zvevadzidzi vega yunivhesiti. Mudzidzi wechirangwani mudzidzi wechirangaridzo chikoro chisarudzo chakanaka chekiyi yekutanga muDZIDZIDZO tafura. Zita rokutanga uye rokupedzisira yevadzidzi harisi kusarudza zvakanaka nokuti pane nguva dzose mukana wekuti vadzidzi vanopfuura imwe vangave vane zita rimwe chete.
Zvimwe zvisarudzo zvisarudzo zvemashoko ekutanga zvinosanganisira ZIP code, kero ye email, uye mushandi, zvose zvingashandura kana kuti zvinomiririra vanhu vazhinji. Chiziviso chinoshandiswa sechinhu chinokosha chinofanira kunge chakasiyana. Kunyange Nzvimbo dzekuchengetedzwa kwenhamba nhamba dzinogona kuchinja apo Social Security Administration inogadzirisa nhamba kune mumwe munhu akabatwa nehupfumi hwekuzivikanwa. Vamwe vanhu havana kunyange nhamba ye Social Security. Zvisinei, nokuti zvose zvezviitiko izvi hazvishamisi. Social Security Numeri inogona kuva sarudzo yakanaka yekiyi yekutanga.
Mazano Okusarudza Zvakanaka Mazano Akakosha
Paunosarudza chinhu chakakosha chekutanga, mabhizinesi ekuchengetedzwa kwemashoko akakurumidza uye akavimbika. Ingoyeuka:
- Chengetai zvishoma . Nemhaka yekuti chinangwa chikuru chinoshandiswa pakuona uye kuenzanisa, chinhu chikuru chepfupi chinoreva kuti gwaro rekuchengetedza mabhuku rinogona kuritora nokukurumidza zvakanyanya kupfuura chinhu chikuru chekutanga.
- Shandisa nhamba yekona yekutanga kana zvichibvira. SQL Server kana imwe nhepfenyuro yekuchengetedza databasi maitiro ekutora nhamba ye data data nekukurumidza kudarika mhando dzemhando dzemhando.
- Ramba uri nyore. Usashandisa chero mavara akasiyana-siyana, nzvimbo dzakabatanidzwa, kana kusanganiswa kwepamusoro uye pasi pepamusoro.
- Usambofa wakashandura kiyi yekutanga shure kwako.