The access token flow passes the access token directly from the client to the Dynamics 365 service for authentication.
Note: As opposed to using a third-party application such as Postman, you can use the Progress DataDirect Dynamics 365 Configuration Manager to obtain an access token to support the access token flow. See Obtain access and refresh tokens using the Configuration Manager for details.
Note: Access tokens are temporary and must be replaced to maintain the session without interruption. The life of an access token is typically one hour.

The following string includes the properties used to connect with the OAuth 2.0 access token flow.

jdbc:datadirect:dynamics365:ServiceURL=serviceurl;AuthenticationMethod=method;
AccessToken=access_token;[property=value[;...]];

where:

serviceurl
specifies the base URL of the Dynamics 365 instance to which you want to issue requests. For example, https://mywebinstance.api.crm.dynamics.com/api/data/v9.1/.
method
specifies the authentication method used to connect to the service. The default value is OAuth2. Since OAuth2 is the default, this value does not have to be specified in a connection URL used for OAuth 2.0 implementations.
access_token
specifies the access token required to authenticate to Dynamics 365. This property allows you to set the access token manually.
property=value
specifies connection property settings. Multiple properties are separated by a semi-colon.

The following example connection string includes the properties for connecting with the OAuth 2.0 access token flow.

Connection conn = DriverManager.getConnection
  ("jdbc:datadirect:dynamics365:
    ServiceURL=https://mywebinstance.api.crm.dynamics.com/api/data/v9.1/;
    AuthenticationMethod=OAuth2;
    AccessToken=C3TQH9zjwek4CgJCU-4Mxb2DxLNfI2LB3a-dNfpWYx;");