Logon string information comprises three syntax elements. In interactive command line environments, such as Teradata Basic Query Utility (BTEQ), logon elements appear as discrete elements.
|.logmech||Specifies the authentication mechanism.
If a .logmech statement is not present, the logon uses the default security mechanism.
|.logdata||Optionally specifies user credentials for external authentication mechanisms.
Use of the .logdata statement is required:
For details, see the topics for specific logon methods.
|.logon||Specifies the tdpid and user credentials for all authentication methods.
For TD2 authentication, logon can also include the user account.
Not usable for external authentication, where a user=username, profile=profile_name, or realm=realm_name specification is required. Instead, use .logdata.
For applications that do not use a command line interface, logon element syntax requirements and options still apply, but you must configure the elements as defaults, or specify them in a connection GUI, depending the application you use.