create table service_registrations (
  name text not null,
  version text not null,
  type ,
  uri text not null,
  title text,
  description text
);

comment on column service_registrations.uri is '
  URI under which this service is deployed.
';
comment on column service_registrations.title is '
  A human-readable title of the service.
';
comment on column service_registrations.description is '
  A human-readable description of the service.
';