Video: Relational databases siv qhov twg?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Relational databases siv cov ntxhuav los khaws cov ntaub ntawv. Cov qauv teb thiab cov ntaub ntawv teev tseg yog sawv cev raws li kab (thaj) thiab kab (cov ntaub ntawv) hauv ib lub rooj. Nrog ib kev sib txheeb database , koj tuaj yeem sib piv cov ntaub ntawv sai sai vim yog kev teeb tsa ntawm cov ntaub ntawv hauv kab.
Yog li ntawd, kev sib txheeb databases li cas?
A kev sib txheeb database khw cov ntaub ntawv hauv rooj. Cov ntxhuav tau muab tso rau hauv kab, thiab txhua kem khaws ib hom cov ntaub ntawv (tus lej, tus lej tiag, cov kab cim, hnub tim, …). Cov cov ntaub ntawv rau ib qho "piv txwv" ntawm lub rooj yog khaws cia ua kab. Txhawm rau txhim kho lub sijhawm nkag mus rau a cov ntaub ntawv lub rooj koj txhais qhov ntsuas ntawm lub rooj.
Kuj Paub, dab tsi yog qhov txawv ntawm database thiab relational database? Tus yuam sij txawv yog RDBMS ( kev sib txheeb database tswj system) cov ntawv thov khaws cov ntaub ntawv hauv a daim ntawv tabular, thaum daim ntawv thov DBMS khaws cov ntaub ntawv ua cov ntaub ntawv. Yuav muaj, tab sis yuav tsis muaj kev sib raug zoo ” nruab nrab cov rooj, zoo li hauv a RDBMS.
Tsis tas li ntawd, puas yog nkag mus rau cov ntaub ntawv sib txheeb?
Nkag mus yog a kev sib txheeb database tswj qhov system. Hauv ib kev sib txheeb database , koj faib koj cov ntaub ntawv mus rau hauv cov ntawv sib cais. Tom qab ntawd koj siv cov lus sib raug zoo los nqa cov ntaub ntawv ua ke raws li xav tau.
Vim li cas kev sib raug zoo databases nrov?
Cov Relational database ua nrov vim SQL thiab nws cov programming abstraction. Nws yog qhov nyuaj rau kev tshem tawm kev sib txheeb databases los ntawm graph-based databases vim yog tsim los ntawm cov neeg siv hauv paus thiab kev teeb tsa. Relational databases tsuas yog yooj yim siv, qauv thiab tau tsim cov kev coj ua rau lawv cov kev tswj hwm.
Pom zoo:
Dab tsi yog Relational databases hauv DBMS?
Ib qho kev sib raug zoo database yog ib txheej ntawm cov lus piav qhia los ntawm cov ntaub ntawv tuaj yeem nkag mus lossis rov ua dua tshiab hauv ntau txoj hauv kev yam tsis tas yuav hloov kho cov ntaub ntawv database. Tus txheej txheem neeg siv thiab daim ntawv thov programming interface (API) ntawm kev sib raug zoo database yog Structured Query Language (SQL)
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