Lub luag haujlwm ntawm lub txiaj ntsig
Tus txhais tau muaj cov teebmeem nram qab no:
1. Cov ntaub ntawv tuaj yeem lees paub qhov tseeb lossis hloov ua ntej sau ntawv rau cov ntaub ntawv cov ntaub ntawv.
2. Thaum muaj qhov yuam kev nyob rau hauv qhov txhais, qhov tshwm sim ntawm kev hloov khoom yuav raug muab tso tseg.
3. Qee qhov chaw tswj hwm cov ntaub ntawv yuav siv cov txhais rau cov lus txhais cov ntsiab lus (DDL), hu ua DDL triggers.
4. LUB INSTEAD OF tuaj yeem hloov tau raws li cov teeb meem tshwj xeeb.