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Database Forum / General DB Topics / DB Theory / January 2006

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ThreadLast Post  Replies
Why not many2one with pk array type30 Jan 2006 17:16 GMT7
This leads to a question.
One way to model many to one is for the attacher
table to hold a foreign key to the attachee table.
Why couldn't some relational database support
What is the most difficult search operations for criminal finger print25 Jan 2006 22:23 GMT8
I am a newbie in database theory, but I think it cannot prevent me from
making some contributions to the field, not in theory, but in database
performance. That is, what I am interested in the database is how to do
match, not its interface or its language. Is it the right place to ...
MV and SQL24 Jan 2006 23:05 GMT37
DonR responded to me, a while back with this:
> My guess is the proprietary MV program can be written quicker and with
> finer details than a combination of database constraints and SQL
> whatif's. I think the problem you and other SQL programmers have in
Early and late binding.23 Jan 2006 16:04 GMT9
The discussion about dynamic typing and the discussion about Dawn's new blog
both put me in mind of an old topic:  early and late binding.
I searched the web, and got a lot of articles on this subject.  All the ones
I've read so far deal with two specific instances of early and late ...
candidate keys in abstract parent relations23 Jan 2006 15:49 GMT50
Hi. I'm a newbie data modeler, and I'm having a tough time with what
seems like a simple data modeling / identity modeling problem, but
which has been giving me fits.
For the purposes of this discussion, I need four relations, working
SQL for Smarties23 Jan 2006 13:17 GMT4
Hey Joe,
An online friend of mine tells me that I'm listed as a contributor in the
latest edition of SQL for Smarties.  Is that worth a complimentary copy?
Multisets and 3VL22 Jan 2006 05:10 GMT5
Folks,
I've read Date, Darwen and Pascal's ideas on how their relational
model is based on set theory (I assume they mean ZFC, but it's
probably not important) and two-valued logic, and they've done a
Modelling Problem22 Jan 2006 04:01 GMT3
Sorry for the non descriptive title but I wasn't really sure how to
describe it.
I have a scenario where I have the following tables.
Projects (PK ProjectID, FK ProposalID -> Proposals)
Relate sets of data20 Jan 2006 07:47 GMT2
How would you try to proove statiscally that two sets of data are
related?
The thing is I have access to a very big database of company losses,
from various compnious and concerning different kinds of losses. Now I
Searching question19 Jan 2006 21:41 GMT1
How would someone be able to search through like 1.5 million records
looking for a specific piece of text in a field without having to do a
linear search through each record, given the fact that they do not have
any information about the other fields in the table?
Announcing New Blog19 Jan 2006 15:34 GMT30
The first installment of the tincat mewsings blog has been posted.  It
should be a good read and is guaranteed raise an eyebrow for some,
although this group of readers will not find it surprising.  It tried
to be accurate and also clear when an opinion is being expressed.
Tool to transform db schema into DDL for different databases18 Jan 2006 05:28 GMT3
Please help me folks .
My goal is to find tool(s) that :
1. allows to edit ERD
2. allows syncronization between DB and ERD
Knowledge and Ignorance over Time17 Jan 2006 21:54 GMT12
Paul C.  said that he's still far from a database expert.  So am I.  But
I've been learning, since about 1980.
Over time  (a long time!)  I've noticed a pattern in the growth of my
knowledge.
What is Pick anyway?16 Jan 2006 21:55 GMT21
As promised in the thread titled "So what's null then if it's not
nothing?", I have started a new thread to discuss Pick in depth, if
anyone is interested.
I just realized it 2am and I have to get up in a few hours and stuff
Data Management11 Jan 2006 22:09 GMT1
My name is Matti and I started to study BCS(British Computing Society)
Diploma.
Because I'm quite new to the subject I was just wondering if anybody
could help me.
Pages: 1 2 December, 2005
 
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