常用API:http://blog.csdn.net/lzjsqn/article/details/54385424
API講解:http://blog.csdn.net/u012260238/article/details/70265853
C語言連接數據庫:
http://blog.csdn.net/u012016940/article/details/42089169
http://blog.csdn.net/qq_18297675/article/details/52239931
顯示某個表的數據:http://blog.csdn.net/qq_18297675/article/details/52239931
B樹實現以及打印樹: