This string includes the options used to connect using OAuth 2.0 authentication.
Note: The strings demonstrated in this section use the DSN-less format. For additional formats, see Using a connection string. 
DRIVER=DataDirect 8.0 Salesforce;AuthenticationMethod=oauth2.0;SchemaMap=schema_map;
       ClientId=client_id;AccessToken=access_token;RefreshToken=refresh_token;
       ClientSectret=client_secret;[attribute=value[;...]];

where:

schema_map
specifies either the name or the absolute path and name of the configuration file where the map of the Salesforce data model is written.
Note: The value for the SchemaMap option must be specified every time you authenticate to a Salesforce instance using OAuth 2.0.
hostname
the base URL or IP address of the Salesforce instance to which you want to connect. If you are logging into a Salesforce instance other than the default, you must provide the root of the Salesforce URL or IP address. The default is login.salesforce.com.
client_id

specifies the consumer key for your application.

access_token

(optionally) specifies the access token you have obtained from Salesforce.

refresh_token

(optionally) specifies the refresh token you have obtained from Salesforce.

Important: If a value for the AccessToken option is not specified, the driver uses the value of the RefreshToken option to make a connection. If both values are not specified, the driver cannot make a successful connection. If both are specified, the driver ignores the AccessToken value and uses the RefreshToken value to generate a new AccessToken value.
client_secret

(optionally) specifies the consumer secret for your application.

attribute=value
specifies connection option settings. Multiple option attributes are separated by a semi-colon.

The following example connection string includes the options used for connecting with OAuth 2.0 authentication: 

DRIVER=DataDirect 8.0 Salesforce;AuthenticationMethod=oauth2.0;SchemaMap=MyMap;
       ClientId=RaARBTsXZTeN4Qx67qPLOS;RefreshToken=YaTARBsRZLeM4Px47qSOLP;
       AccessToken=ZbTARBsRZLeM4Px56qOLPS