The authentication module of DSPS maps the user's identity to user account in untrusted DBMS through principalmapping.
DSPS的身份认证模块通过主体映射将用户的身份映射为不可信DBMS的账号。
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In summary, the mapping of a user's principal name into a meaningful name to the WebSphere registry must be considered when planning a SPNEGO WebSphere Application Server deployment.