各种学习地址
用例图
http://www.cnblogs.com/Yogurshine/archive/2013/01/14/2859248.html
ER图
http://blog.csdn.net/belen_xue/article/details/52763629
ER图与关系模式
http://blog.csdn.net/u012501459/article/details/12945191
数据流图
http://www.cnblogs.com/kissazi2/archive/2012/06/10/2543956.html
数据字典
http://blog.csdn.net/longronglin/article/details/1531474
类图
http://blog.csdn.net/lovelion/article/details/7838679
http://blog.csdn.net/lovelion/article/details/7842898
http://blog.csdn.net/lovelion/article/details/7843308
http://blog.csdn.net/lovelion/article/details/7843391
http://blog.csdn.net/lovelion/article/details/7843437
时序图
http://blog.csdn.net/fanxiaobin577328725/article/details/51675253
http://blog.csdn.net/doniexun/article/details/38317537
状态图
http://www.cnblogs.com/sura/archive/2012/07/01/2572083.html
