Hello,
I searched the web, looked into my book... I cannot find how to add
comment/description to table or column using CREATE TABLE "xxx" ....

The only way I know is to use IBExpert, which finaly creates ugly query
like this one:

update RDB$RELATION_FIELDS
set RDB$DESCRIPTION = ?DESC
where (RDB$RELATION_NAME = 'cmp_job_users') and
(RDB$FIELD_NAME = 'job_id')

Is there any complete help / manual online for Firebird?

Thanks
Michal