Cov txheej txheem:

Cov txheej txheem khaws cia hauv PHP yog dab tsi?
Cov txheej txheem khaws cia hauv PHP yog dab tsi?

Video: Cov txheej txheem khaws cia hauv PHP yog dab tsi?

Video: Cov txheej txheem khaws cia hauv PHP yog dab tsi?
Video: Tsua muas zaj dab neeg Thaiv 5/5/2023 2024, Kaum ib hlis
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Software hom: Database

Xav txog qhov no, dab tsi yog qhov txheej txheem khaws cia hauv database?

A khaws cov txheej txheem yog ib txheej ntawm Structured Query Language (SQL) nqe lus nrog rau lub npe, uas yog khaws cia hauv kev sib raug zoo database kev tswj hwm qhov system ua ib pab pawg, yog li nws tuaj yeem rov siv dua thiab sib koom los ntawm ntau qhov kev pab cuam.

Ib yam li ntawd, dab tsi yog delimiter hauv cov txheej txheem khaws cia? Koj txhais a DELIMITER qhia rau tus neeg siv mysql los kho cov nqe lus, kev ua haujlwm, cov txheej txheem khaws cia los yog ua raws li tag nrho cov lus. Nquag hauv ib. sql ntaub ntawv koj teem ib tug txawv DELIMITER zoo li $$. Cov DELIMITER hais kom ua yog siv los hloov tus qauv tus lej ntawm MySQL cov lus txib (piv txwv li;).

Cov lus nug tseem yog, qhov txheej txheem khaws cia MySQL yog dab tsi?

Cov txheej txheem khaws cia . A txheej txheem (feem ntau hu ua a khaws cov txheej txheem ) yog ib tug subroutine zoo li ib tug subprogram nyob rau hauv ib tug niaj zaus xam cov lus, khaws cia hauv database. A txheej txheem muaj lub npe, ib daim ntawv teev npe, thiab SQL nqe lus. Feem ntau tag nrho cov kev sib raug zoo database system txhawb khaws cov txheej txheem , MySQL 5 yiv khaws cov txheej txheem.

Vim li cas peb siv cov txheej txheem khaws cia?

Cov txiaj ntsig ntawm kev siv cov txheej txheem khaws cia hauv SQL Server es tsis yog daim ntawv thov code khaws cia hauv zos ntawm cov neeg siv computer suav nrog:

  • Lawv tso cai modular programming.
  • Lawv tso cai ua kom tiav sai.
  • Lawv tuaj yeem txo cov tsheb khiav hauv network.
  • Lawv tuaj yeem siv los ua kev ruaj ntseg mechanism.

Pom zoo: