Which of the following statements creates an Oracle account, but lets the operating system authenticate logons?

technology databases

  1. create user ops$admin identified by os;

  2. create user ops$admin identified externally;

  3. create user ops$admin nopassword;

  4. create user ops$admin authenticated by os;

Show answer
Correct Option: B
Explanation:

To solve this question, the user needs to have knowledge about Oracle database user authentication methods.

Option A: This option creates an Oracle user account with the name 'ops$admin' and the password 'os'. However, it uses a password file for authentication, not the operating system. Therefore, this option is incorrect.

Option B: This option creates an Oracle user account with the name 'ops$admin' and identifies it as an external user, which means that authentication is done by the operating system. Therefore, this option is correct.

Option C: This option creates an Oracle user account with the name 'ops$admin' and no password. This is not a secure method of authentication and is not related to operating system authentication. Therefore, this option is incorrect.

Option D: This option creates an Oracle user account with the name 'ops$admin' and specifies that it should be authenticated by the operating system. However, it does not create an operating system account for the user. Therefore, this option is incorrect.

The Answer is: B

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