Talk:Data modeling

message: I noticed that the Overview section as well as some of the Data Modeling Topics included irrelevant jargon that appeared to be sourced from an article about how data modeling can go wrong, and why it could end up being expensive. This information seemed more like opinions of the author, rather than facts (and even if they were facts, it didn't seem necessary given the scope of this article). Also, I edited some of the sentences that appeared to be very technical/bookish/unclear, so that people with little or no background information about data modeling could understand and follow. Sameen.r (talk) 02:29, 21 October 2011 (UTC)
thread_title:  Overview and Data Modeling Topics 

message: I restructered the data model and data modelling article recently. First I merged all content in the data model article about a month ago, leaving this article here a stub. Now I have expanded this article again with the intention of focussing on data modelling. In the process I used some of the things already explained in the data model article. Now this is still far from perfect. I think I still miss some mayor perspectives here. 
As Er-Yu Ding (2004) was explaining in his "Brief history of data modeling" there have been all kinds of approaches in datamodeling since the 1950s/60s:
* Structured Programming and Design : Started at code level (programming), with Edsgar Dijkstra (1968)
* Relational data modeling : based on Data Theory Normalization by E.F. Codd, 1970) 
* Structured Analysis adds in the 1970s with Entity Relationship Diagrams (ERD) for static data modeling by Chen i.e. 
* Structured Analysis and Design with CASE tools in the 1980s based on Information Engineering (Finkelstein & Martin) 
* Prototyping in the 1980s
* Object-Orientation with C++ sinc 1984 and UML (Gooch, Rumbaugh, Jacobson) in end 1990s
* In the 1990s RAD (Rapid Application Development), Data Warehouse, Business Rules, Middleware, Web   
* And Generic models (industry & subject area) and standards, Data transformation and transmission 
New approaches in software development methodologies have effected data modelling as well. This article hasn't done a very good job yet explaining these historical links, and the new services in brought in data modeling. 
-- Marcel Douwe Dekker (talk) 01:14, 31 October 2008 (UTC)
thread_title:  Article expanded 

message: Some sources have a much more mathematical (less data-base oriented) definition of what data modeling is.  I'm not sure whether this is best treated as a special case of what is covered here or as a separate article.  Probably best to create a separate article because I think one represents how best to store data whereas the other looks for a model which would fit the data.
e.g. William H. Press (2007) "Numerical recipes: The art of scientific computing" - Chapter 15: Modelling of Data.
Yaris678 (talk) 21:12, 3 September 2009 (UTC)
replies: text: I am not familiar with these mathematical theory, but it seems like a good idea to start a separate article first. And beside that, this article is not just data-base oriented. There is a separate article about database models : the visualization of how to store data. Data modeling, I think, is more specific about the visualization of the use of data in organizations. -- Marcel Douwe Dekker (talk) 22:24, 3 September 2009 (UTC)
thread_title:  Other uses of the term ''data modeling'' 

message: * In this edit text is copy/pasted here from the IDEF1X and Generic data model articles. 
* In this edit text is copy/pasted here a PD source. 
* In this edit text is copy/pasted here from the database design article.
* In this edit text is copy/pasted here from the Data model article. 
* In this edit text is copy/pasted here from a PD source. 
-- Mdd (talk) 22:57, 4 November 2009 (UTC)
thread_title:  Copy-paste registration 

message: This paragraph opens with "In 1975 ANSI described three kinds of data-model instance".  They did but in 1975 it wasn't Conceptual/Logical/Physical as the para claims.  It was External/Conceptual/Physical, see the wiki article http://en.wikipedia.org/wiki/Three_schema_approach or look at the diagram alongside!
80.254.147.164 (talk) 14:45, 17 July 2014 (UTC)
thread_title:  Conceptual, logical and physical schemas

message: Hello fellow Wikipedians,
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thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just added archive links to  on Data modeling. Please take a moment to review my edit. If necessary, add  after the link to keep me from modifying it. Alternatively, you can add  to keep me off the page altogether. I made the following changes:
*Added archive http://web.archive.org/web/20090320001015/http://knowledge.fhwa.dot.gov/tam/aashto.nsf/All+Documents/4825476B2B5C687285256B1F00544258/$FILE/DIGloss.pdf to http://knowledge.fhwa.dot.gov/tam/aashto.nsf/All+Documents/4825476B2B5C687285256B1F00544258/$FILE/DIGloss.pdf
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at ).
Cheers.—cyberbot IITalk to my owner:Online 06:02, 27 March 2016 (UTC)
thread_title:  External links modified