Cov txheej txheem:
Video: Koj tshawb nrhiav databases li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-18 08:24
Sab saum toj Kaum Nrhiav Tswv Yim
- Siv THIAB los muab cov lus tseem ceeb thiab kab lus thaum nrhiav hluav taws xob databases rau cov ntawv xov xwm.
- Siv truncation (ib tug hnub qub) thiab wildcards (feem ntau yog ib lo lus nug los yog exclamation point).
- Nrhiav tawm yog tias database koj siv muaj "subject nrhiav "kev xaiv.
- Siv koj lub tswv yim.
Kuj paub, koj tshawb nrhiav ib tsab xov xwm li cas?
Rau nrhiav rau cov lus los yog kab lus nyob rau hauv tsab xov xwm Koj tab tom saib, ua cov hauv qab no: Tuav lub Ctrlkeyboard thiab nias lub F keyboard key (Ctrl + F) los yog txoj cai-nias (nias tus nas khawm sab xis) qhov chaw ntawm lub tsab xov xwm thiab xaiv Nrhiav (hauv qhov no tsab xov xwm ).
Ib tug kuj yuav nug, yog Google Scholar lub database? Google Scholar npaj siab yuav ua qhov chaw forresearchers pib. Txoj kev Google Scholar indexes orcollects nws cov ntaub ntawv yog txawv los ntawm lwm yam databases .“ Scholarly ” databases feem ntau yog indexarticles ntawm cov kev qhuab qhia tshwj xeeb lossis cov ncauj lus, nrog rau qee cov ntawv xov xwm raug suav nrog rau lub hom phiaj.
Ib sab saum toj no, puas yog lub tshuab tshawb nrhiav cov ntaub ntawv?
A database search engine yog a tshuab tshawb nrhiav uas ua haujlwm ntawm cov khoom khaws cia hauv digital database.
Dab tsi yog database piv txwv?
Microsoft Excel spreadsheet lossis Microsoft Access yog qhov zoo piv txwv ntawm desktop database cov kev pab cuam. Cov program no tso cai rau cov neeg siv nkag mus rau cov ntaub ntawv, khaws cia, tiv thaiv nws, thiab khaws nws thaum xav tau. Lawv suav nrog databases zoo li SQLServer, Oracle Database , Sybase, Informix, thiab MySQL.
Pom zoo:
Puas yog kev tshawb nrhiav linear zoo ib yam li kev tshawb fawb sib txuas?
Chav Kawm: Nrhiav algorithm
Dab tsi yog cov tshuab tshawb nrhiav uas tshawb nrhiav lwm lub tshuab tshawb fawb?
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