Cov txheej txheem:
Video: Dab tsi yog cov kauj ruam los tsim kom muaj kev sib raug zoo database?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
7 Cov kauj ruam yooj yim los tsim cov ntaub ntawv sib txheeb
- Txiav txim siab lub hom phiaj ntawm qhov system.
- Txiav txim seb qhov chaw/cov rooj yuav suav nrog.
- Txiav txim siab seb tus cwj pwm / thaj chaw twg yuav suav nrog.
- Txheeb xyuas qhov chaw tshwj xeeb (tus yuam sij tseem ceeb)
- Txiav txim siab kev sib raug zoo ntawm cov rooj.
- Refine tus tsim (normalization)
- Populate cov ntxhuav nrog raw cov ntaub ntawv .
Ib yam li ntawd, koj ua li cas los tsim cov ntaub ntawv sib raug zoo?
Relational Database Design Process
- Kauj Ruam 1: Txhais Lub Hom Phiaj ntawm Database (Yuav tsum tau tsom xam)
- Kauj Ruam 2: Sau cov ntaub ntawv, teeb tsa hauv cov ntxhuav thiab qhia cov yuam sij tseem ceeb.
- Kauj Ruam 3: Tsim Kev Sib Raug Zoo ntawm Cov Rooj.
- Kauj Ruam 4: Ua kom zoo & normalize tus tsim.
Tsis tas li ntawd, Excel puas yog cov ntaub ntawv sib txheeb? Excel cov lub koom haum qauv qiv nws tus kheej zoo li cas databases ua haujlwm. Ib daim ntawv qhia, ib leeg, yog a database , tab sis tsis yog a kev sib raug zoo ib. Cov kev sib txheeb database yog ib qho kev sib txuas ntawm Master spreadsheet tables thiab tag nrho nws cov Slave tables los yog spreadsheets.
Kuj kom paub yog, koj ua li cas tsim cov ntaub ntawv sib raug zoo hauv Access?
Rau ua nws yooj yim rau sau cov ntaub ntawv rau hauv a kev sib txheeb database koj ua tau tsim ib daim ntawv los tswj cov ntaub ntawv nkag. Ua li no, xaiv Tsim > Form Wizard. Los ntawm cov kab lus / Cov lus nug dropdown xaiv Table: Cov neeg siv khoom thiab nyem ob npaug rau chevron (>>) kom txav tag nrho cov teb mus rau hauv txoj cai pane.
Ib qho piv txwv ntawm kev sib raug zoo database yog dab tsi?
Nrov piv txwv ntawm kev sib txheeb databases suav nrog Microsoft SQL Server, Oracle Database , MySQL thiab IBM DB2. Huab-based kev sib txheeb databases , los yog database raws li kev pabcuam (DBaaS), kuj tau siv dav vim tias lawv pab cov tuam txhab rau outsource database tu, patching thiab infrastructure kev txhawb nqa yuav tsum tau.
Pom zoo:
Dab tsi yog tus txheej txheem los ntawm kauj ruam los tsim kom tau kos npe digital?
Yuav Ua Li Cas Sau Daim Ntawv Sau Npe Digital. Kauj Ruam 1: Muab koj Daim Ntawv Sau Npe rau ntawm Daim Ntawv Dawb. Kauj ruam 2: Coj ib daim duab zoo ntawm koj lub npe kos npe. Kauj ruam 3: Qhib Daim Duab Nrog GIMP, thiab kho cov qib raws li pom hauv daim duab. Kauj ruam 4: Kho qhov sib piv raws li qhia hauv daim duab. Kauj ruam 5: Ntxuav ib ncig ntawm koj kos npe los ntawm kev siv Eraser Tool. Kauj ruam 6: Hloov Dawb Xim rau Alpha
Dab tsi yog qhov txawv ntawm kev sib raug zoo unary kev sib raug zoo binary thiab kev sib raug zoo ternary?
Kev sib raug zoo tsis sib xws yog thaum ob tus neeg koom hauv kev sib raug zoo yog tib lub koom haum. Piv txwv li: Cov ncauj lus yuav yog qhov yuav tsum tau ua ua ntej rau lwm yam kev kawm. Kev sib raug zoo ternary yog thaum peb lub koom haum koom nrog kev sib raug zoo
Dab tsi yog qhov txawv ntawm kev sib raug zoo thiab tsis muaj kev sib raug zoo databases?
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Yuav ua li cas yog ob kauj ruam siv tau nyob rau hauv 6 kauj ruam daws teeb meem txoj kev?
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