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DATE | 2014-12-18 |
FROM | Ruben Safir
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SUBJECT | Subject: [LIU Comp Sci] relational calculus
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From owner-learn-outgoing-at-mrbrklyn.com Thu Dec 18 10:48:44 2014 Return-Path: X-Original-To: archive-at-mrbrklyn.com Delivered-To: archive-at-mrbrklyn.com Received: by mrbrklyn.com (Postfix) id 7DF6A161167; Thu, 18 Dec 2014 10:48:44 -0500 (EST) Delivered-To: learn-outgoing-at-mrbrklyn.com Received: by mrbrklyn.com (Postfix, from userid 28) id 6A797161169; Thu, 18 Dec 2014 10:48:44 -0500 (EST) Delivered-To: learn-at-nylxs.com Received: from mailbackend.panix.com (mailbackend.panix.com [166.84.1.89]) by mrbrklyn.com (Postfix) with ESMTP id 8B9F8161167 for ; Thu, 18 Dec 2014 10:48:43 -0500 (EST) Received: from panix2.panix.com (panix2.panix.com [166.84.1.2]) by mailbackend.panix.com (Postfix) with ESMTP id 4994213340; Thu, 18 Dec 2014 10:48:43 -0500 (EST) Received: by panix2.panix.com (Postfix, from userid 20529) id 3791933C87; Thu, 18 Dec 2014 10:48:43 -0500 (EST) Date: Thu, 18 Dec 2014 10:48:43 -0500 From: Ruben Safir To: Jizhe Li Cc: learn-at-nylxs.com Subject: [LIU Comp Sci] relational calculus Message-ID: <20141218154843.GD4242-at-panix.com> References: <20141218154337.GB4242-at-panix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: owner-learn-at-mrbrklyn.com Precedence: bulk Reply-To: learn-at-mrbrklyn.com
can you explain relational calculus?
On Thu, Dec 18, 2014 at 11:44:26PM +0800, Jizhe Li wrote: > ok. i'm in the library . > > On Thu, Dec 18, 2014 at 11:43 PM, Ruben Safir wrote: > > > > On Thu, Dec 18, 2014 at 11:36:20PM +0800, Jizhe Li wrote: > > > where are you ? in the library? > > > > > > I'm in the house. I can't work in the library > > > > > >
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