You could execute the 'CATALOG_PERMISSIONS' stored procedure which will return information about the privileges granted to a user/role.
`CALL CATALOG_PERMISSIONS ('<username>','<rolename>')`
On executing this stored procedure, you could find the privileges of an user/role which is granted over a view.
In addition to that, administrator user have complete access over the web service but normal user with read, write and create privileges can only access the web service which are created by them.
Refer the [CATALOG_PERMISSIONS](https://community.denodo.com/docs/html/browse/6.0/vdp/vql/stored_procedures/predefined_stored_procedures/catalog_permissions#catalog-permissions) and [User and Access Right in Virtual DataPort](https://community.denodo.com/docs/html/browse/6.0/vdp/administration/databases_users_and_access_rights_in_virtual_dataport/user_and_access_right_in_virtual_dataport/user_and_access_right_in_virtual_dataport#user-and-access-right-in-virtual-dataport) section of the Virtual DataPort Administration Guide for more information on privileges and access rights respectively.
Hope this helps you!