Dab tsi yog Relational databases hauv DBMS?
Dab tsi yog Relational databases hauv DBMS?

Video: Dab tsi yog Relational databases hauv DBMS?

Video: Dab tsi yog Relational databases hauv DBMS?
Video: Lec 4: Functional dependency in DBMS | What is functional dependency | Database Management System 2024, Kaum ib hlis
Anonim

A kev sib txheeb database yog ib txheej txheej ntawm cov lus piav qhia los ntawm cov ntaub ntawv tuaj yeem nkag mus lossis rov sib sau ua ke hauv ntau txoj hauv kev yam tsis tas yuav hloov kho cov ntaub ntawv. database rooj. Tus txheej txheem neeg siv thiab daim ntawv thov programming interface (API) ntawm a kev sib txheeb database yog Structured Query Language (SQL).

Nyob rau hauv no hais txog, dab tsi yog hu ua relational database?

A kev sib txheeb database yog hom database uas khaws cia thiab muab kev nkag mus rau cov ntaub ntawv cov ntsiab lus uas cuam tshuam rau ib leeg. Hauv ib kev sib txheeb database , txhua kab hauv lub rooj yog cov ntaub ntawv nrog tus ID tshwj xeeb hu ua tus yuam sij.

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.

Ib yam li ntawd, koj tuaj yeem nug, cov ntaub ntawv sib raug zoo siv rau dab tsi?

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.

Dab tsi yog hom database?

Peb tau tham txog plaub lub ntsiab hom databases : ntawv databases , desktop database programs, kev sib raug zoo database tswj systems (RDMS), thiab NoSQL thiab object-oriented databases . Peb kuj tau tham txog ob txoj hauv kev los categorize databases raws li lawv cov qauv tsim qauv: kev ua haujlwm databases thiab database cov tsev khaws khoom.

Pom zoo: