Genealogy of Relational Databases
Genealogy of Relational Databases
Written by Nikos Vaggalis   
Tuesday, 18 September 2012

How many relational databases have there been? How many are now extinct? How are they related to one another? These questions are all answered in a single chart.

 

Click for larger image (pdf)

databasemap

 

This complicated family tree of relational databases has been created by the Hasso-Plattner Institut, part of the University of Potsdam, Germany. It resembles a map of a metro system but the lines are  time-lines with the symbols marking milestones in each product's life cycle; date of publication, subsequent versions,  acquisitions and discontinuations when a product reaches the end of its line.

What is interesting is the way in which products branch and merge.

The RDBMS Genealogy chart clearly visualizes the history of relational databases showing that Ingres was the very first RDBMS  and that circa 1980 Postgres was created as a branch of it and that SQL Server is a direct descendant of Sybase. It also carries encyclopedic value introducing people to products previously unheard of. What is also interesting is that you can perhaps discern the future of the RDBMS's by observing that, a few years after the millennium many Analytics engines like Vectorwise, Infobright or AsterDatabase, came on the scene. something that identifies the current trend.

Where, you might ask are Hbase, MongoDB, CouchDB and the other NoSQL databases - well as they are not relational databases they are not part of the landscape.

Personally I liked the addition of the geographical feature of rivers, with Relational Creek flowing into Codd River.

That's a nice tribute!

 

rdbms2

More Information

RDBMS Genealogy

Related Articles

Codd and his Rule

SQL and Relational Theory (book review)

The Manga Guide to Databases (book review)

 

blog comments powered by Disqus

 

To be informed about new articles on I Programmer, install the I Programmer Toolbar, subscribe to the RSS feed, follow us on, Twitter, Facebook, Google+ or Linkedin,  or sign up for our weekly newsletter.

 

Banner


Fear And Loathing in The App Store 15 - Apple Bans F.lux And Then Duplicates It
20/01/2016

Back in November 2015 we explained how F.lux had been banned from the app store for violating the Developer Program Agreement. This wasn't good, but now Apple has implemented the same functionality as [ ... ]



Project Rider A Cross Platform C# IDE
25/01/2016

Microsoft has gone open source crazy and you can now use C# under Linux or OSX as well as Windows. The problem is that Visual Studio isn't cross platform. So what do you use?


More News

Last Updated ( Tuesday, 18 September 2012 )
 
 

   
RSS feed of news items only
I Programmer News
Copyright © 2016 i-programmer.info. All Rights Reserved.
Joomla! is Free Software released under the GNU/GPL License.