Release 10.1A: OpenEdge Data Management:
DataServer for Microsoft SQL Server

Connections and security in Windows

When you configure an ODBC data source in Windows, you can choose one of three levels of security:

Standard — Requires that a client pass a user ID and password that the MS SQL Server database validates against the list of users in the syslogins table. The request typically comes from a nontrusted connection, such as through TCP/IP. The OpenEdge client or WebSpeed agent passes this information with the User ID (-U) and Password (-P) connection parameters.
Integrated — Relies on the Windows operating system to validate user information. The MS SQL Server database accepts user information from the process that requests a connection. The request must come from a trusted connection, such as one using Named Pipes. The MS SQL Server database performs no additional validation.
Mixed — Accepts requests from trusted or nontrusted connections:
If the connection is trusted and the client provides no user ID, a user ID that consists entirely of spaces, or a user ID that matches the user that started the process, the MS SQL Server database accepts the connection.
If the connection is nontrusted, the OpenEdge client must provide the user ID and password.

Progress Software Corporation recommends the following guidelines for working with an MS SQL Server database and Windows security:

Configure an MS SQL Server database to use Standard or Mixed security if you are using remote OpenEdge clients.
If you are using Mixed security, always have the clients specify the -U and -P connection parameters.