Any thoughts, ideas, references - I'd like to hear them.

Nilone

03-08-2010 01:21 PM
Nilone

On Feb 21, 7:05 pm, Jan Hidders <hidd... (AT) gmail (DOT) com> wrote: I got that wrong. I should have said: The crucial point is this: Whereas...

Ben Finney

03-03-2010 04:12 PM
Gene Wirchenko

We at Nob Hill Software are working on a new query tool: http://www.nobhillsoft.com/MarieAlix.aspx?HeardVia=ptut You can read all about it on the...

Mia

03-01-2010 08:44 AM
Mia

This is weird. Earlier today I moved the directory containing II_SYSTEM (/opt) to a new drive. Afterwards I was able to start Ingres just fine...

Roy Hann

02-26-2010 12:28 PM
Roy Hann

I use the computer and the Net on a regular basis but I don't know a whole lot about it all, especially when it gets technical. I have an Acer...

Virgina Hernandez

01-27-2010 02:32 PM
Virgina Hernandez

Brian wrote: Imbeciles do. I don't think any political inclination manages to exclude imbeciles very successfully. I consider myself pretty...

Roy Hann

01-17-2010 02:17 PM
Roy Hann

FREE Animations you can e-mail - (click link): http://www.amperefitz.com/contact.html THOUSANDS of FREE Animations

fitz

01-12-2010 04:06 PM
fitz

Hi all, i am a master's student. I have to do a keyword search for spatial database. I have the data set of a particular district in India. I have a...

Kavita

01-06-2010 02:21 AM
Kavita

Jan Hidders says... Well, as I said, I don't see how the proof of a contradiction could go through. The variant looks similar to your...

Nilone

01-05-2010 07:28 AM
Daryl McCullough

On Dec 22, 12:13*am, Jan Hidders <hidd... (AT) gmail (DOT) com> wrote: Hello Jan. As I told you a few years ago, my “simple form” is the way in...

Sampo Syreeni

12-27-2009 09:36 AM
vldm10

Cimode wrote: If I understand what you mean, I have to say that it would be a mug's game to try that because you'd have to interface to the many...

Cimode

12-17-2009 11:10 AM
Tonci Korsano

Hi There! is there a way to make the count(*) return zero . because the default behavoir is that it will skip this value if there is no records so...

Guto

12-16-2009 04:56 PM
TroyK

Hello friends , Yesterday while I am trying to convert My Sql to Sql Server , I found an online Conversion tool which helped me to convert My Sql to...

Additya

12-12-2009 11:11 AM
Bob Badour

A few days ago I noticed this an interesting correlation between ideas on my website and those on the following:...

vldm10

12-03-2009 04:13 AM
vldm10

From: http://www.json.org/ JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It...

Casey Hawthorne

11-26-2009 08:35 PM
Clifford Heath

Apologies for cross-postings. Please send to interested colleagues and students -- CALL FOR PAPERS - Deadline for submissions: 19 February 2010...

natty2006@gmail.com

11-25-2009 06:02 AM
natty2006@gmail.com

http://www.nou.edu.ng/noun/NOUN_OCL/pdf/pdf2/MBA%20758%20Database%20Management%20System.pdf "IBM started working on a prototype system loosely based...

paul c

11-22-2009 10:27 PM
compdb@hotmail.com

One I can't seem to find is: E. F. CODD, "Recent Investigations in Relational Database Systems," IBM. Research Report RJ1385 Grateful if anybody...

paul c

11-22-2009 11:13 AM
Cimode

We at Nob Hill Software are working on a new query tool: http://www.nobhillsoft.com/MarieAlix.aspx?HeardVia=ptut You can read all about it on the...

Mia

11-18-2009 01:16 PM
Mia

Mr. Scott wrote: Thanks, I shouldn't have dropped those two dependencies and I take back the strawman crack. But I don't get why { CITY, CLASS,...

paul c

11-17-2009 12:40 PM
Sampo Syreeni

ASONAM 2010 - CALL FOR PAPERS (A printable typeset version of a more extensive CfP can be found at <http://asonam2010.hau.gr/>.) The 2010...

tanseletu@gmail.com

11-08-2009 07:07 AM
tanseletu@gmail.com

I can't remember where in his papers Codd stated the Information Principle but here's a version of a quote by Date: "The entire information content...

paul c

11-07-2009 08:28 AM
Cimode

Vadim Tropashko wrote: How does one express de Morgan's Law in relational lattice terms?

paul c

11-06-2009 09:21 PM
Vadim Tropashko

You have the direction wrong. Coupons are created and go out with orders, so the set of coupons defined in rvOrders is the total set known of by the...

Sampo Syreeni

11-01-2009 05:41 PM
Reinier Post

Hi All, I'm trying to implement a tree structure, hence I'd like the Nested Set model, but I need to be able to record the history of the...

Ed Lucas

10-31-2009 11:32 PM
-CELKO-

I just realized that, for a number of years already, I've continuously been bumping into something that could perhaps be generalized into a bona fide...

Sampo Syreeni

10-23-2009 11:40 PM
Sampo Syreeni

A long time ago when I thought I already knew something about data but hadn't yet worked with databases -- telling in itself -- I had the opportunity...

Sampo Syreeni

10-21-2009 02:08 PM
Sampo Syreeni

Dear comp.databases.theory Group, over the last one or two years you helped me a couple of times when i asked silly questions, mainly about...

Christoph Rupp

10-21-2009 12:03 AM
paul c

Join .Net Community This group represents the Microsoft .Net community. All .net programmers all around the world are welcome here. In this...

Shawon_

10-20-2009 06:09 AM
Shawon_

On Oct 19, 6:29*pm, Sampo Syreeni <de... (AT) iki (DOT) fi> wrote: Did you try FBI (on pseudocolumn such as "case when x=null then 'N/A' else x end"...

Tegiri Nenashi

10-19-2009 10:23 PM
Tegiri Nenashi

paul c wrote: That hasn't happened anywhere near me. SAP is very widely used, for example, and more and more organisations have given up on bespoke...

lawpoop

10-19-2009 02:59 PM
Roy Hann

Hi, When defining numeric columns, for the last 10 years in Oracle I have NEVER specified the size for a number unless I am specifically required to...

VTR250

10-12-2009 05:41 PM
VTR250

I am posting this link because I think it gives an excellent summary of where we are in utilizing databases in applications Your...

laurip

10-11-2009 01:46 PM
Cimode

Like most people around here, I periodically return to the view update problem. I also subscribe to the idea that relational databases...

Sampo Syreeni

10-05-2009 01:31 PM
rpost

I'm new to relational theory, having read a C.J. Date's book but I worry that I may have picked up mistaken impression about the relational theory...

Banana

10-01-2009 08:28 PM
David BL

On Jul 23, 6:43 pm, Nilone <rea... (AT) gmail (DOT) com> wrote: I'm associating OO with *any* approach (however carefully formalised) that involves...

Walter Mitty

09-30-2009 02:22 AM
Clifford Heath

I have a situation that is somewhat the opposite of the case in which you would use ON DELETE CASCADE on a foreign key in a child table to ensure...

cm

09-30-2009 12:12 AM
Brian

I am trying to get a top-down understanding of what an RDBMS does to go from a SQL Query to actual data (records served up). Your thoughts / Links...

David

09-14-2009 12:22 PM
Hugo Kornelis

Regarding so-called "union compatibility",.suppose relations A and B with equal headings, say named h. Suppose non-empty relation U with only one...

paul c

09-12-2009 11:00 PM
paul c

Suppose we have views u, w defined as relational expressions over base tables x, y, z: u = f(x,y,z) w = g(x,y,z) Let's assume this system of...

Tegiri Nenashi

09-12-2009 05:22 AM
paul c

Not sure what to make of this: USPTO Application #: 20080222602 Title: Declarative object identity using relation types Abstract: The present...

Nilone

09-10-2009 01:45 AM
vldm10

Why do implementation languages not allow this? Surely not for logical reasons? We can delete from projection because NOT Pa implies NOT Pab, eg.,...

paul c

09-08-2009 08:39 AM
Brian

I had a though about possreps the other day, and I wanted to post it, for no particular reason. This thought is not much developed, so don't expect...

Marshall

09-06-2009 09:42 AM
none

On Sep 1, 8:12*am, Kevin Kirkpatrick <kvnkrkpt... (AT) gmail (DOT) com> wrote: Do you have anything to justify these requirements? They sound like...

paul c

09-03-2009 07:34 PM
paul c

Vadim Tropashko wrote: I must admit that relational lattices sound rather scary to me; but maybe some further reading on the subject could cure...

Troels Arvin

08-26-2009 10:00 AM
Vadim Tropashko

Bob Badour wrote: Given a relation with a key K1, ... Kn and remaining attributes L1, ... Lm, that relation is always the join of the m...

rpost

08-25-2009 09:09 AM
Walter Mitty

He has turned his course text into a free book at: http://bookboon.com/uk/student/it/an-introduction-to-relational-database-theory It is rather...

paul c

08-22-2009 02:26 PM
paul c

Hi, I'm looking for a solution for the following scenario: - System running on multiple servers (could be dozens) - Each server is running IIS and...

Docco

08-17-2009 11:05 PM
toby

"paul c" <toledobythesea (AT) oohay (DOT) ac> wrote I like this war story. I salute you, old timer. I was once an assembly language type myself....

Walter Mitty

08-17-2009 05:11 PM
Walter Mitty

I'm looking for any references, discussion or theory about hierarchical models for situations such as residential addresses, geopolitical...

Nilone

08-17-2009 05:14 AM
Nilone