Video: DBMS lus yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
DBMS cov lus . Los ntawm Chaitanya Singh | Filed under: DBMS . Database yam lus yog siv los nyeem, hloov kho thiab khaws cov ntaub ntawv hauv cov ntaub ntawv. Muaj ob peb yam xws li yam lus uas tuaj yeem siv rau lub hom phiaj no; ib tug ntawm lawv yog SQL (Structured Query Lus ).
Hauv qhov no, koj txhais li cas los ntawm cov lus database?
Database Languages yog siv los tsim thiab tswj database hauv computer. Cov nqe lus SQL feem ntau siv hauv Oracle thiab MS Access ua tau muab categorized raws li cov ntaub ntawv txhais lus (DDL), tswj cov ntaub ntawv lus (DCL) thiab kev tswj cov ntaub ntawv lus (DML).
Ib yam li ntawd, hom lus database yog dab tsi? Hom Database Language
- Cov ntaub ntawv txhais lus. DDL stands rau Data Definition Language.
- Data Manipulation Language. DML stands rau Data Manipulation Language.
- Cov Ntaub Ntawv Tswj Lus. DCL stands rau Data Control Language.
- Transaction Control Language. TCL yog siv los khiav cov kev hloov pauv los ntawm DML nqe lus.
Ib tug kuj yuav nug, DBMS yog dab tsi nrog piv txwv?
DBMS . Cov DBMS tswj cov ntaub ntawv tuaj, npaj nws, thiab muab txoj hauv kev rau cov ntaub ntawv hloov kho lossis rho tawm los ntawm cov neeg siv lossis lwm cov kev pabcuam. Ib txhia DBMS piv txwv suav nrog MySQL, PostgreSQL, Microsoft Access, SQL Server, FileMaker, Oracle, RDBMS, dBASE, Clipper, thiab FoxPro.
DBMS yog dab tsi?
A database tswj system ( DBMS ) yog system software tsim thiab tswj databases. A DBMS ua rau nws ua tau rau cov neeg siv kawg los tsim, nyeem, hloov kho thiab tshem tawm cov ntaub ntawv hauv cov ntaub ntawv.
Pom zoo:
Dab tsi yog zaj lus qhia nyob rau hauv Lus dab neeg ntawm Sleepy Hollow?
Sau: Washington Irving
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