Purpose
Use this statement to create a role.
Prerequisite
You need to have the system privilege CREATE ROLE. 
Syntax
create_role::=
                                                                         
                                                                    
Usage Notes
- A role possesses no privileges after the creation of it. Privileges are assigned with the GRANT statement. A role is either granted privileges directly or other roles are assigned to it.
- The same rules apply for role names as for user names. Refer to CREATE USER for more information.
- Rename a role by using the RENAME command.
- 
                                                                    Information about the database roles can be found in the corresponding system tables, for example EXA_ALL_ROLES. 
Example
CREATE ROLE test_role;