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Parameter
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Explanation
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DSN*
 
Data Source Name*
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Name of the data source name (DSN) you are configuring. 
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Description
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Description of the DSN to help distinguish it from others.
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Database type*
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Indicates for which type of database you are configuring this DSN (Informix).
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Driver*
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On the New Data Source Name page, this is the name of the ODBC driver installed for the type of database selected in the Database type box (Informix). This is a nonconfigurable field. 
 
On the Edit Data Source Name page, this is the absolute path name of the ODBC driver specified for this DSN. This is a configurable field.
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Database*
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Because there can be multiple installations of a database running on one computer, each database is given its own name. This parameter indicates the name of the database for which you are configuring this DSN.
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LogonID
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Username required for accessing the database. If the username is not provided when configuring a system DSN, every connection string using this DSN must include the username. 
 
Caution: To prevent access to a database by unauthorized users in shared Web hosting environments, it is recommended that the username and password be provided in each connection string, rather than in the system DSN.
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Password
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Password required for accessing the database. If the password is not provided when configuring a system DSN, every connection string using this DSN must include the password. 
 
Caution: To prevent access to a database by unauthorized users in shared Web hosting environments, it is recommended that the username and password be provided in each connection string, rather than in the system DSN.
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HostName*
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Name of the computer on which the Informix server resides.
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PortNumber*
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Port on which the database server is configured to listen. Ask your database administrator for this information.
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ServerName*
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Name of the database server as it appears in the sqlhosts file.
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