数据库的学习

1.SQL语言的几个要点

http://baike.baidu.com/link?url=5BKRHP_G4m9rm4-kI3OOu9FmUA1pFFHcPPWXSAboSN6Ih825MCgtougU41lFEM8fJEYaTcdKkZMH3kk58Q_sw31ng7nz0fW6isEWkwvtE6ron2AJTtnq32wSf6K7f37r

2. OPENLDAP

http://www.openldap.org/

http://baike.baidu.com/link?url=xp3FRDfB4Cm6vRTk4kYfzlueyz4Ayp1yUDWd-84yCt_HWASUiEh8OUhdjFydjbCv0pEM_NZLXSSJGDwwc-QL-q

3.数据库的设计和理论

http://wenku.baidu.com/link?url=oNtLG6v--nPyocgm1bs0dxWX7wE-lEx9s3rCMAK0eFigXlTxXXvRt0Ki2gry6y3Gfb0uFBrJ-lMaX37kh2EG7FlyBzOrgYHD4nj6_0lAox_

http://www.cnblogs.com/wuhenke/archive/2010/08/11/1797307.html

http://www.csdn.net/article/2012-04-11/2804419

http://blog.csdn.net/taijianyu/article/details/5945490

数据完整性

4. 关系数据库

http://baike.baidu.com/link?url=AXM2GQ1ptyU94IGDjFsxIMK_t8neCKjimgpR9WAO4Y9dk23yWYQ0L_bFfUCEYJi4WuQjeVKtVjFvfVJ1Y6t3Xq