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Video: Dab tsi yog cov ntsiab lus siv hauv Rdbms?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-18 08:24
RDBMS terminologies
- Database. Database yog ib phau ntawm cov ntxhuav xws li,, thiab lwm yam.
- Rooj. Ib lub rooj yog ib phau ntawm kab thiab kab, piv txwv li,
- Kem. Kem yog nyob rau hauv ib lub rooj -
- Kab . Kab tseem hu ua tuple hauv RDBMS.
- Lub Ntsiab Tseem Ceeb.
- Foreign Key.
- Super Key.
- Composite Key.
Ib yam li ntawd, tib neeg nug, dab tsi yog cov ntsiab lus database?
Basic Database Terminology
- Database. Lub database yog ib lub npe sau cov rooj.
- Hais kom ua. Ib qho lus txib yog ib txoj hlua uas koj xa mus rau tus neeg rau zaub mov hauv kev cia siab tias muaj lub server ua qee yam muaj txiaj ntsig.
- Lus nug.
- Table (kev sib txheeb, ntaub ntawv, chav kawm)
- Kem (teb, tus cwj pwm)
- Kab (cov ntaub ntawv, tuple)
- Saib.
- Client/server.
Dab tsi yog Rdbms nrog piv txwv? Stands rau " Relational Database Management System." Ib RDBMS yog DBMS tsim tshwj xeeb rau kev sib txheeb databases. Ib RDBMS kuj tseem tuaj yeem muab qhov pom kev sawv cev ntawm cov ntaub ntawv. Rau piv txwv , nws tuaj yeem tso saib cov ntaub ntawv hauv cov ntxhuav zoo li daim ntawv nthuav qhia, tso cai rau koj saib thiab txawm tias hloov kho tus nqi ntawm lub rooj.
Kuj nug, dab tsi yog kev sib raug zoo database terminology?
A kev sib txheeb database yog a database qauv uas khaws cov ntaub ntawv hauv cov ntxhuav. Feem coob ntawm databases siv nyob rau hauv kev siv niaj hnub no kev sib raug zoo , yog li ntawd nqe lus " database "thiab" kev sib txheeb database " feem ntau siv synonymously. Txhua lub rooj hauv a kev sib txheeb database muaj kab (cov ntaub ntawv) thiab kab (thaj).
Dab tsi yog hom Rdbms?
Kev tshuaj xyuas ntawm txawv Database Hom : Relational versus Non-Relational. Relational databases kuj hu ua Relational Database Management Systems ( RDBMS ) lossis SQL databases. Keeb kwm, qhov nrov tshaj plaws ntawm cov no yog Microsoft SQL Server, Oracle Database, MySQL, thiab IBM DB2.
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