Access Control
Access control settings work in conjunction with roles to define the permissions for a user. Roles define the permissions for categories of entities, such as all dataflows or all database resources, and access control settings define the permissions for specific entities, called secured entities. Examples of secured entities include specific jobs or specific database connections. For example, you may have a role that has granted the Modify permission to the secured entity type "Dataflows", but you may want to prevent users from modifying one specific dataflow. You could accomplish this by using access control to remove the Modify permission for the specific dataflow you do not want modified. You can specify access control settings for users and roles. Access control settings for a user override that specific user's permissions as granted by the user's roles. Access control settings for roles apply to all users who have that role.