This table provides a list of valid unix usernames. This information is dynamic and does need a data entry page.
Source romber_username_unix_tbl.sql
create table romber_member.username_unix ( username_id romber_member.username_id not null, username_gid int not null, username_uid int not null );
Source romber_username_unix_pk.sql
alter table romber_member.username_unix add constraint romber_username_unix_pk primary key ( username_id );
Source romber_username_unix_fk1.sql
alter table romber_member.username_unix add constraint romber_username_unix_fk1 foreign key ( username_id ) references romber_member.usernames ( username_id );