Re: Table Relationships

am Tue, dem 31.10.2006, um 11:15:26 -0600 mailte Curtis Scheer folgendes:
> Given the following two tables:
>
> CREATE TABLE public.task
> (
> taskid int4 NOT NULL DEFAULT nextval('task_taskid_seq'::regclass),
> description varchar,
> CONSTRAINT pk_taskid PRIMARY KEY (taskid)
> )
>
> public.users
> (
> userid int4 NOT NULL,
> username varchar,
> CONSTRAINT pk_userid PRIMARY KEY (userid)
> )
>
> I want to record which user ?performed the task? and which user ?checked the
> task?, I?ve come up with a few ideas on this but I would like to know what the
> correct way would be to implement this into my table design.

Perhaps a table like this:

(
user int references public.users,
task int references public.task,
ts timestamptz default now(),
action char(1) check (action in ('p','c'))
)

-- with p(perform), c(cheked)

HTH, Andreas
--
Andreas Kretschmer
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