text: -- BigBlueButton
  alter table o_bbb_meeting add b_password varchar2(64) default null;
  alter table o_bbb_meeting add b_directory varchar2(64) default null;
  alter table o_bbb_meeting add constraint bbb_dir_idx unique (b_directory);
  
  alter table o_bbb_recording add b_permanent number default null;
  
  -- Livestream
  create table o_livestream_url_template (
     id bigserial,
     creationdate timestamp not null,
     lastmodified timestamp not null,
     l_name varchar2(64) not null,
     l_url1 varchar2(2048),
     l_url2 varchar2(2048),
     primary key (id)
  );
  