I just had this idea about possreps. In another context, someone discussing methods, or functions that are bound very closely to a specific type,...

Marshall

02-04-2008 07:52 AM
Jan Hidders

On Jan 29, 4:41 pm, "David W. Fenton" <XXXuse... (AT) dfenton (DOT) com.invalid> wrote: You are slipping seamlessly between the concept of a...

paul c

02-02-2008 08:36 AM
mAsterdam

I am looking at some DB2 performance-tuning notes where I am seeing a phrase I've not seen before. The notes speak of a test in a WHERE clause...

Roy Hann

01-30-2008 03:59 PM
Lennart

Hi, I am reseaching into the best method for implementing a booking system data structure. My booking system in full will be used to store details...

bissatch@yahoo.co.uk

01-27-2008 09:02 AM
David Cressey

I'm a bit studying join types and trying to make a visualisation of relations among them. As a result I've created an ER diagram describing relations...

Gints Plivna

01-26-2008 09:22 AM
Bob Badour

I know how to suppress a normal tree but I meet the following kind of situation : r1 -> b1 -> b2 -> ... -> b3 -> ... -> b2 -> b1 -> ... -> b1 -> ...

fj

01-26-2008 03:11 AM
-CELKO-

E-harmony.com claims to match you with another across 29 dimensions. Well, 3 dimensions are still hard for me to think about. But in with...

Evan Keel

01-25-2008 10:02 PM
Evan Keel

So impressed was I by mAsterdam's japanese 'reference' symbols, I decided to add them to my list of useful unicode. Yes, I am indeed, that cool, and...

JOG

01-25-2008 01:06 PM
Bob Badour

vldm10 wrote: This is getting silly. Did you even read the question? How did you assess David's lack of understanding 'function'? What gave you...

mAsterdam

01-20-2008 02:27 PM
vldm10

Actually, i have a need to store the numbers like "AS2303", TS3381"(first 2 alphabets,next 3 numbers). What i want is, i have to assign the integrity...

Naga lenoj

01-18-2008 01:21 PM
DBMS_Plumber

Is there a good program to create ER diagrams for you? I know DBVisuaziler can do it, but are there any other tools? TIA

magawake

01-17-2008 08:10 PM
Knowledgy

Always a physical issue. Never a theory issue.Agree? Evan

Evan Keel

01-17-2008 04:13 PM
David Cressey

I'd like to end the thread I started 1/1/08 ("Something new for the New Year (2008)") and begin a new post that is not about RM or any other specific...

Rob

01-17-2008 02:20 PM
Tegiri Nenashi

Is there a commercial RDBMS that allows one to create indices on views? I'm asking this partly because of BCNF. A typical BCNF problem is (where...

aehchua@ntu.edu.sg

01-16-2008 03:06 PM
TroyK

New game written in T-SQL. Sudoku: http://www.geocities.com/swint002/Sudoku.txt SW

swint002@gmail.com

01-14-2008 09:58 PM
swint002@gmail.com

Final call for papers The 2008 MULTICONF (website: www.PromoteResearch.org ) will be held during July 7-10 2008 in Orlando, FL, USA. We invite draft...

john

01-12-2008 11:10 AM
john

"Joe Thurbon" <usenet (AT) thurbon (DOT) com> wrote I once wrote a little program to play Mastermind (a code guessing game) using entropy to...

David Cressey

01-12-2008 04:17 AM
David Cressey

Hi I am trying to find out how you deal with variable prices, so when I query * I don't get * . Is there a rule of thumb for this type of...

graeme

01-11-2008 07:30 AM
David Cressey

Hi, In the past I have always made the relationship between two tables using foriegn keys. So, to link employee to employer I would have a column in...

bissatch@yahoo.co.uk

01-11-2008 12:28 AM
David Cressey

I need help in understanding what is an automorphism of a database instance. The following definition is from the book Relational Database Theory...

Kira Yamato

01-10-2008 10:25 AM
Jan Hidders

Hello , can you help me please to analyse this situation and choose an appropriate design for that The prloblem /...

tears

01-09-2008 01:14 PM
rpl

What are NULLs for? Missing information? Then surely there should just be no tuple? To indicate that there can be no value? Why not a seperate...

stevedtrm

01-08-2008 03:20 PM
Sampo Syreeni

Hello , can you help me please to analyse this situation and choose an appropriate design for that The prloblem /...

tears

01-08-2008 03:12 PM
TroyK

Apologies for cross-postings. Please send to interested colleagues and students Submission Deadline (second call): 28 January...

natty2006@gmail.com

01-08-2008 10:28 AM
natty2006@gmail.com

I'm a newbie to dB programming. I set up a set of tables (see below after the RL signoff) to capture the relationship between a group of people...

raylopez99

01-01-2008 09:13 PM
Gene Wirchenko

--------------- Glossary 0.1.2 "You keep using that word. I do not think it means january 2008 what you think it...

mAsterdam

01-01-2008 11:38 AM
mAsterdam

On 9 dec, 22:10, JOG <j... (AT) cs (DOT) nott.ac.uk> wrote: But that is what I'm saying, isn't it? These sets of properties are part of your model...

David Cressey

12-31-2007 08:48 PM
mAsterdam

Linux is a free operating system that was created by Linus Torvalds when he was a student at the University of Helsinki in 1991. Torvalds started...

Andrew.Skipper.group.com@gmail.com

12-31-2007 10:11 AM
Andrew.Skipper.group.com@gmail.com

I am trying to build a tool that calculates the canonical cover of a set of functional dependencies, and can infer functional dependencies from an...

Jeff

12-29-2007 07:02 PM
Jeff

Hello: I am trying to learn SQL and RDBMS theories. To acheive this, I decided to assign myself a project. My project is basically, account for my...

magawake

12-27-2007 12:02 PM
Rob

My beginner's book on RDBMS theory by Louis Davidson (APress) says that there's a trend towards using GUIDs (artificial keys) as computing power...

raylopez99

12-27-2007 06:13 AM
rpl

http://arxiv.org/ftp/arxiv/papers/0712/0712.1863.pdf Does this make any sense? Here are my doubts: 1. DNA structure is sequential. It fits well into...

Tegiri Nenashi

12-26-2007 04:54 PM
Tegiri Nenashi

On Dec 4, 6:13 pm, rp... (AT) pcwin518 (DOT) campus.tue.nl (rpost) wrote: Fair enough :) I still think if you examine this again you'll see it...

Phil Reynolds

12-26-2007 12:54 PM
JOG

VERY URGENT position Please post your resume at rgupta (AT) metasenseusa (DOT) com michael (AT) metasenseusa (DOT) com Let me know if you can help...

META SENSE SUPPORT

12-26-2007 12:28 PM
META SENSE SUPPORT

I'm getting the hang of database architecture design I think, along with easy to code, drag-and-drop Access 2003 forms programming--great front...

raylopez99

12-26-2007 03:43 AM
rpl

It's time for me to ask another dumb question. The term "data sublanguage" appears in Codd's 1970 paper. I kind of glossed over it when I first...

David Cressey

12-25-2007 12:10 PM
Knowledgy

http://www.idera.com/Simon/ How would you like Simon's job?

David Cressey

12-22-2007 07:45 AM
Tony Rogerson

Just wondered if anyone had seen this: http://www.regdeveloper.co.uk/2007/12/17/amazon_simpledb/ While in principle a globally accessible database...

JOG

12-21-2007 08:56 PM
Lon Stowell

sorry to bug you but... if i want to define a datum in terms of who owns what, what branch of IM is it ? (yes i know it's not a computer-bound...

rpl

12-19-2007 11:41 PM
rpl

*********************************************************** CALL FOR CHAPTERS Proposal Submission Deadline: Dec 31, 2007 Full Chapter Due: Apr 30,...

Yanchang

12-17-2007 09:52 PM
Yanchang

Suppose I want to create a schema for S = student, J = subject, T = teacher, that enforces 1) For each subject, each student taking that subject is...

Kira Yamato

12-15-2007 07:42 PM
Brian Selzer

OK, this is about my fifth day doing databases, and I've read about 1NF, 2NF, 3NF here:...

raylopez99

12-15-2007 10:48 AM
raylopez99

Hi, It seems to be a common enough problem, but it doesn't seem to ever be properly addressed in data modelling books, and from reading on the web...

d-42

12-14-2007 06:51 PM
-CELKO-

raylopez99 wrote: You are confusing logical and physical issues. For example, if all of the 'dependent' or 'downstream' relations are physically...

Bob Badour

12-14-2007 04:40 PM
Bob Badour

In paper "Independence of Logic Database Queries and Updates" by C. Elkan it is proven that for logical databases query independency from updates...

silentser@gmail.com

12-14-2007 10:23 AM
silentser@gmail.com

On Dec 6, 7:54 pm, paul c <toledobythe... (AT) ooyah (DOT) ac> wrote: Well, if nothing else, we can certainly consider relation constants. DUM and...

Tegiri Nenashi

12-12-2007 08:17 PM
V.J. Kumar

http://www.amazon.com/Handbook-Relational-Database-Candace-Fleming/dp/0201114348/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1197329088&sr=1-1 I know this...

Evan Keel

12-12-2007 07:18 PM
Brian Selzer

Detecting Intruders on Your System Is Fun and Easy Well, perhaps the title of this chapter is a slightly misleading. Supposedly, becoming an...

lambretha.gastrula@gmail.com

12-11-2007 09:01 AM
lambretha.gastrula@gmail.com

Valentina Office Server, Valentina Embedded Server and the free Valentina Community Server for Linux now support custom database properties, some of...

Lynn

12-07-2007 05:57 PM
Bob Badour

The October SQL Bits was a resounding success, we had 321 delegates on the day and feedback was brilliant, hot on the success of that conference...

Tony Rogerson

12-07-2007 10:04 AM
Tony Rogerson