数据库触发器
数据库触发器Trigger详解
目录触发器的三要素触发器的分类创建触发器行级触发器语句级触发器修改触发器删除触发器在数据库管理系统中,触发器(Trigger)是一种特殊的存储过程,它在特定的事件发生时自动执行。触发器通常用于维护数据的完整性[详细]
2025-05-20 08:57 分类:数据库How can I easily save the Window size and position state using Obj-C?
What is the best way to remember the Windows position between application loads using Obj-C?I am using Interface Builder for the interface, is it possible to do this with bindings.[详细]
2022-12-29 02:09 分类:问答