Two new relations were created to associate dotlrn classes and communities to dotlrn-catalog courses. On associates the dotlrn_catalog type with dotlrn_class_instance type for dotlrn classes, and the other one associates the dotlrn_catalog type with dotlrn_club for the communities. Here is were the previous created roles take place:

To associate one course to dotlrn class

 rel_types::new -role_one d_catalog_role -role_two dotlrn_class_role dotlrn_catalog_class_rel \
 "DotLRN Catalog Class" "DotLRN Catalog Class" dotlrn_catalog 0 1 dotlrn_class_instance 0 1

To associate one course to dotrln community

 rel_types::new -role_one d_catalog_role -role_two dotlrn_com_role dotlrn_catalog_dotcom_rel \
 "DotLRN Catalog Community" "DotLRN Catalog Community" dotlrn_catalog 0 1 dotlrn_club 0 1