在DB2数据库客户端，登录远程数据库的操作哪个是正确的？（）A.db2 connect to dbnameB.db2 attach db dbname user usernameC.db2 catalog db dbname user username using passwordD.db2 connect to dbname user username using password

单项选择题

在DB2数据库客户端，登录远程数据库的操作哪个是正确的？（）

A.db2 connect to dbname
B.db2 attach db dbname user username
C.db2 catalog db dbname user username using password
D.db2 connect to dbname user username using password