Re: a problem about database modeling

From: Marshall <marshall.spight_at_gmail.com>
Date: 19 Jul 2006 07:59:59 -0700
Message-ID: <1153321199.066769.279920@p79g2000cwp.googlegroups.com>

dxuranus wrote:
> i have a entity 'device' and every 'device' has there own 'type' and
> every 'type' has there specific attributes.
> first i let the table 'device' keep all common attributs of device
> ,but i find i can't keep the 'device's type attributes at least i found
> if i do that.it got be urgly and strangly.
> so what can i do about this thanks for any help.

Can you be more specific about the problem you are having? I don't know how to help with urgliness and strangliness.

Marshall Received on Wed Jul 19 2006 - 09:59:59 CDT