MESSAGE
| DATE | 2014-12-18 |
| FROM | Ruben Safir
|
| SUBJECT | Subject: [LIU Comp Sci] Re: relational calculus
|
From owner-learn-outgoing-at-mrbrklyn.com Thu Dec 18 10:55:25 2014
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Date: Thu, 18 Dec 2014 10:55:38 -0500
From: Ruben Safir
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To: Jizhe Li , learn-at-nylxs.com
Subject: [LIU Comp Sci] Re: relational calculus
References: <20141218154337.GB4242-at-panix.com> <20141218154843.GD4242-at-panix.com>
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not sql, relational calculus
On 12/18/2014 10:50 AM, Jizhe Li wrote:
> i will send you a ppt about the sql
>
> On Thu, Dec 18, 2014 at 11:48 PM, Ruben Safir wrote:
>> 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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