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Home -> Community -> Mailing Lists -> Oracle-L -> Re: RE: tuple relational calculus
I did tuple relational calculus in school (Ms CIS). It just made my
brain hurt, served no practical purpose other than an academic exercise.
It is useful if you need to prove you're sql statements mathematically.
Take a look at this url:
http://www.cs.sfu.ca/CC/354/zaiane/material/notes/Chapter3/node12.html#SECTION00131000000000000000
...JIM... >>> rgaffuri_at_cox.net 4/21/03 3:57:40 PM >>> does anyone here actually know relational algebra and relational calculus that Codd used to model the relational DB? I just started flipping through a book on it. Interesting stuff... you need to have knowledge of relational theory to get it(its really basic stuff). Slow reading though.
anyone find it useful?
>
> From: "Goulet, Dick" <DGoulet_at_vicr.com>
> Date: 2003/04/21 Mon PM 04:27:16 EDT
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Subject: RE:
>
> Y'all better, with out DR. Codd we'd all be out of a job!!
>
> Dick Goulet
> Senior Oracle DBA
> Oracle Certified 8i DBA
>
> -----Original Message-----
> Sent: Monday, April 21, 2003 3:27 PM
> To: Multiple recipients of list ORACLE-L
>
>
> "Goulet, Dick" <DGoulet_at_vicr.com> said:
>
> > FATHER OF RELATIONAL DATABASE MODEL HAS DIED | Mercury News
> > The father of the relational database model is dead. Edgar F. Codd,
a
> > former IBMer, died over the weekend. He was 79. Before Codd's 1970
> > research paper laying out the principles of the relational model,
> > analyzing large amounts of data was difficult.
> >
>
> Next week, at IOUGA, I'll have to remember to toast his memory.
>
> --Glenn
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
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> Author: <stauffer_at_swarthmore.edu
> INET: stauffer_at_swarthmore.edu
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: <rgaffuri_at_cox.net INET: rgaffuri_at_cox.net Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: James Howerton INET: jhowerton_at_uabmc.edu Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Mon Apr 21 2003 - 16:46:53 CDT
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