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- 多项选择题 You connected to the database using the following connection string： CONNECT hr/hr@test.us.oracle.com：1521/mydb Which three statements are correct regarding the connection string？（）
A、mydb is a service name.
B、test.us.oracle.com is a database name.
C、1521 is the listener port number.
D、mydb is a host name.
E、test.us.oracle.com is a net service name.
F、hr is a username.
G、test.us.oracle.com is an instance name.
- A,C,F
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