ODBC vs JDBC
Feem ntau, cov ntawv thov software raug sau ua hom lus tshwj xeeb (xws li Java, C, thiab lwm yam), thaum cov ntaub ntawv lees txais cov lus nug hauv qee hom lus tshwj xeeb (xws li SQL). Yog li ntawd, thaum daim ntawv thov software xav tau nkag mus rau cov ntaub ntawv hauv database, ib qho interface uas tuaj yeem txhais cov lus rau ib leeg (daim ntawv thov thiab database) yuav tsum tau. Txwv tsis pub, daim ntawv thov programmers yuav tsum kawm thiab koom nrog cov lus tshwj xeeb hauv lawv daim ntawv thov. ODBC (Qhib Database Connectivity) thiab JDBC (Java DatabBase Connectivity) yog ob qhov sib cuam tshuam uas daws qhov teeb meem tshwj xeeb no. ODBC yog lub platform, hom lus thiab kev ua haujlwm ywj pheej interface uas tuaj yeem siv rau lub hom phiaj no. Ib yam li ntawd, JDBC yog cov ntaub ntawv API rau Java programming lus. Java programmers tuaj yeem siv JDBC-rau-ODBC choj los tham nrog ODBC raws li cov ntaub ntawv.
ODBC yog dab tsi?
ODBC yog qhov sib cuam tshuam rau kev nkag mus rau kev tswj hwm database (DBMS). ODBC yog tsim los ntawm SQL Access Group nyob rau hauv 1992 ib lub sij hawm tsis muaj tus qauv nruab nrab los sib txuas lus ntawm ib tug database thiab ib daim ntawv thov. Nws tsis nyob ntawm ib hom lus programming lossis database system lossis operating system. Cov programmers tuaj yeem siv ODBC interface los sau cov ntawv thov uas tuaj yeem nug cov ntaub ntawv los ntawm txhua qhov chaw khaws ntaub ntawv, txawm hais tias ib puag ncig nws tab tom khiav lossis hom DBMS nws siv.
Vim tias tus tsav tsheb ODBC ua tus txhais lus ntawm daim ntawv thov thiab cov ntaub ntawv, ODBC muaj peev xwm ua tiav cov lus thiab kev ywj pheej ntawm lub platform. Qhov no txhais tau hais tias daim ntawv thov raug tshem tawm ntawm lub nra ntawm kev paub cov ntaub ntawv tshwj xeeb cov lus. Hloov chaw nws tsuas yog paub thiab siv ODBS syntax thiab tus tsav tsheb yuav txhais cov lus nug rau hauv cov ntaub ntawv hauv hom lus nws tuaj yeem nkag siab. Tom qab ntawd, cov txiaj ntsig tau xa rov qab rau hauv hom ntawv uas tuaj yeem nkag siab los ntawm daim ntawv thov. ODBC software API tuaj yeem siv nrog ob qho tib si kev sib raug zoo thiab tsis sib raug zoo database systems. Lwm qhov zoo dua ntawm kev muaj ODBC ua ib qho nruab nrab nruab nrab nruab nrab ntawm daim ntawv thov thiab cov ntaub ntawv yog tias txhua zaus cov ntaub ntawv hloov pauv, cov software tsis tas yuav hloov kho. Tsuas yog qhov hloov tshiab rau ODBC tus tsav tsheb yuav txaus.
JDBC yog dab tsi?
JDBC yog Data API tsim rau Java programming lus. Nws tau tso tawm nrog JDK 1.1 los ntawm Sun Microsystems (Java thawj tus tswv). Thiab nws tam sim no version yog JDBC 4.0 (tam sim no faib nrog JAVA SE6). Java.sql thiab javax.sql pob khoom muaj cov chav kawm JDBC. Nws yog ib qho interface uas pab tus neeg siv nkag mus rau hauv cov ntaub ntawv database, los ntawm kev muab txoj hauv kev los nug thiab hloov kho cov ntaub ntawv hauv cov ntaub ntawv. JDBC yog qhov tsim nyog rau cov khoom taw qhia cov ntaub ntawv. Koj tuaj yeem nkag mus rau ib qho ODBC-raws li database los ntawm kev siv JDBC-rau-ODBC choj.
Dab tsi yog qhov txawv ntawm ODBC thiab JDBC?
ODBC yog qhov qhib interface uas tuaj yeem siv los ntawm txhua daim ntawv thov los sib txuas lus nrog txhua qhov system database, thaum JDBC yog qhov interface uas siv tau los ntawm Java daim ntawv thov nkag mus rau cov ntaub ntawv. Yog li, tsis zoo li JDBC, ODBC yog lus ywj pheej. Tab sis los ntawm kev siv JDBC-rau-ODBC choj Java daim ntawv thov kuj tuaj yeem tham nrog ODBC raws li database.
