http://stackoverflow.com/questions/9437584/what-does-webkit-min-device-pixel-ratio-2-stand-for http://stackoverflow.com/questions/16030041/media-query-pixel-density-and-max-width-together http://stackoverflow.com/questions/15975432/webkit-min- ...

Step1 下载并安装Oracle Express Edition 安装过程中需要设置system用户的密码 Step2 创建DB user (windows 环境下) Start -> Programs(或者All Programs) -> Oracle Database 11g express Edition -> Run SQL Command Line system用户连接数据库 SQL> connect Enter U ...