You can specify the -V option of isql to use network-based security services such as unified login. With unified login, you can be authenticated with a security mechanism offered by a third-party provider and then log in to Adaptive Server without specifying a login name or a password.
See the Utility Guide and Chapter 16, “External Authentication,” in the System Administration Guide: Volume 1 for more information about the options you can specify to use network-based security.
