Re: implement BLP model on Postgresql db

yes I know the method for implement, but I do  not know where I should implement necessary changes ....
I know that I should add a additional column in my data base tables that show the level of access of each row.
these level types is finite.
and by the way I should add to a sql command which user issues, the condition that it checks whether he / she can access / gain the row he/ she want or not.
But I don't know these two steps how and where I should implement.

Regards,

--- On Sun, 11/21/10, Cliff Pratt <enkiduonthenet(at)gmail(dot)com> wrote:

From: Cliff Pratt <enkiduonthenet(at)gmail(dot)com>
Subject: Re: [ADMIN] implement BLP model on Postgresql db
To: "Pourghorban.S" <aras_h1988(at)yahoo(dot)com>
Date: Sunday, November 21, 2010, 2:07 AM

On Sun, Nov 21, 2010 at 5:14 AM, Pourghorban.S <aras_h1988(at)yahoo(dot)com> wrote:
>
> Dear Sirs,
>
>      I have a undergraduate thesis with the title " implementing a
> discretionary access control model "  on Postgresql based on
> The Bell- La Padula Model (BLP).
>
>     Please let me know how I could start working on my thesis.
>
>     I mean, which materials or documents would be useful.
>
Have you research the BLP model? That's what I would do first. Google it.

However even before that you should discuss this with your supervisor,
who no doubt has something in mind and can and should give you
references to follow.

Cheers,

Cliff