asp.net 数据库连接web.config怎么配置

Question

KSTSDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.12.15.203)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = kstsdb)
)
)
这里是DB建立后给出的代码，我将怎么在web.config中进行配置？还有就是在程序中怎么连接操作数据库，小弟刚开始学习谢谢大神指导跪谢！！！！