Database design -- some tips
http://www.csdn.net/article/2012-04-11/2804419
http://blog.csdn.net/sirfei/article/details/434994
http://blog.csdn.net/haiross/article/details/50427382
Database design -- some tips
http://www.csdn.net/article/2012-04-11/2804419
http://blog.csdn.net/sirfei/article/details/434994
http://blog.csdn.net/haiross/article/details/50427382