http://www.runoob.com/sqlite/sqlite-tutorial.html
http://blog.csdn.net/arnozhang12/article/details/7731678
http://blog.csdn.net/super_man_ww/article/details/52992650
http://blog.csdn.net/shen8686/article/details/6205045/
https://www.cnblogs.com/CSharpLover/p/5193698.html
http://blog.csdn.net/northcan/article/details/7232941
https://www.cnblogs.com/tester-l/p/6049135.html
mysql:
https://www.cnblogs.com/zbseoag/archive/2013/03/19/2970004.html
