Access入门教程7.2怎样为表设置主键
单击工具栏上的 视图 按钮 切换回表的设计视图 开始为表设置主键 第五课的课后补充里曾经说过主键是什么 设置表的主键非常简单 比如要将 订单信息表 中的 订单号 字段作为表的 主键 只要单击 订单号 这一行中的任何位置 将这行设为当前行 然后单击工具栏上的
单击工具栏上的
设置表的主键非常简单
用这种方法设置了新的主键以后
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