retieve roles using ant migration tool salesforce

As a loosely-typed representation of the Salesforce object model, the partner WSDL can be used to access data within any organization.

Partner WSDL-This API is for partners who are developing client applications for multiple organizations.

If a field or object is added in a later package version, you must generate the enterprise WSDL with that package version to work with the object or field in your API integration.

The generated WSDL contains the objects and fields in your organization, including those available in the selected versions of each installed package.

If new custom fields or objects are added to, renamed, or removed from your organization’s information, you need to regenerate the WSDL file in order to access them.

Note the following when generating the enterprise WSDL: Profiles have the system permissions for tasks like exporting data and help control CRED (Create, Read, Edit, Delete) features.

A Profile is a basic requirement for any user in Salesforce, while a Role is optionally added. If you are downloading an enterprise WSDL and you have managed packages installed in your organization, you need to take an extra step to select the version of each installed package to include in the generated WSDL. Both Profiles and Roles are added to a user record in Salesforce, but they differ in essence. This WSDL changes if custom fields or custom objects are added to, renamed, or removed from, your organization’s Salesforceconfiguration. It provides information about your schema, data types, and fields to your development environment, allowing for a tighter integration between it and the Web service. The enterprise WSDL file is a strongly typed representation of your organization’s data.

Enterprise WSDL-This API is for most enterprise users who are developing client applications for their organization.

There are two Web services for which you can obtain WSDL files for API access:

Retieve roles using ant migration tool salesforce