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Database Forum / General DB Topics / DB Theory / August 2009

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ThreadLast Post  Replies
Hugh Darwen's free book25 Aug 2009 17:40 GMT2
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 unique, being more self-contained and therefore
approachable than many other books on the subject, also short and
WWW/Internet 2009: 2nd CFP until 21 September25 Aug 2009 14:09 GMT96
Apologies for cross-postings. Please send to interested colleagues and
students
-- CALL FOR PAPERS - Deadline for submissions (2nd Call): 21 September
2009 --
large-scale log loading & parsing18 Aug 2009 04:05 GMT2
I'm looking for a solution for the following scenario:
- System running on multiple servers (could be dozens)
- Each server is running IIS and contains logs
The solution is a way to easily provide analysis reports on a combined
Hierarchical data models17 Aug 2009 10:14 GMT8
I'm looking for any references, discussion or theory about
hierarchical models for situations such as residential addresses,
geopolitical subdivisions, corporate structures, military ranks, file
systems, type systems, etc.
some ideas about db rheory15 Aug 2009 12:29 GMT18
Recently I found this article on the internet
http://www.cs.mu.oz.au/~rui/publication/vldb08_TransactionTimeIndexing.pdf
and have decided to write a reply on the following Reinier’s message
from a union is always a join! :
another laugher11 Aug 2009 22:35 GMT2
Walter, you've really got me going today.  Here's more oversell from the
www originator at
http://www.scientificamerican.com/article.cfm?id=the-semantic-web&print=true
"The Semantic Web will enable machines to COMPREHEND semantic documents
Does entity integrity imply entity identity?10 Aug 2009 02:18 GMT52
Since the entity integrity rule ensures that a relational table cannot have
any duplicate rows, does that imply that each row in a table maps to a
distinct entity?
Getting Normal Forms *wrong*. Is there actual disagreement on what     1NF > 3NF means or is this sloppiness or ignorance on authors' parts?08 Aug 2009 03:56 GMT9
Is there "genuine" disagreement on what 1NF, 2NF and 3NF mean? Or is
the variety of contradictory in-print definitions of Normal Forms due
to sloppy thinking, slopping writing, or plain old ignorance from
authors? Also, where can I find an accurate, concise (less than 3
New06 Aug 2009 17:29 GMT1
Please take a look at my new website and use the contact us feature to
provide feedback on the website that I will be deploying in
September.  Positive and negative feedback both welcome.
Thank you
New Website on Business Intelligence...06 Aug 2009 03:16 GMT5
Check out my New Website on Business Intelligence...
http://www.businessintelligenceonline.org/
A standard UML profile for data modeling. How close are we?05 Aug 2009 12:56 GMT4
1) Are there competing UML Data Modeling profiles (for relational
databases) or is only one being considered? One of Scott's articles
mentions that an
official data modeling profile RFP appeared at OMG in December, 2005.
Is a function a relation?04 Aug 2009 23:28 GMT65
Since Keith popped up recently, I'm interesting in reopening the
question of whether a function is a relation (I have a small point to
add).
I'm interpreting "is a" in the same way as D&D.  i.e. the question is
Object-oriented thinking in SQL context?04 Aug 2009 23:13 GMT189
I have a problem with wrapping my mind into the 'right' wrinkles.
I need to come up with a database design  in SQL/MSAccess,
since that's the tool that is available to me. The subject of the
database is an inventory of electronic instruments, and the
 
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