alf-admin
User
Joined: 07 Nov 2007
Posts: 229
Location: Norway
|
 Posted: Tue Nov 13, 2007 5:21 am Post subject: Isn't XML hierarchical? We threw that away 30 years ago... |
 |
|
In my opinion, much of what as been written about an "XML data model" can be seen way bay in time. I am fortunate enough to have been working with such models in the early years of database design, and can see the traces of old ideas being "invented" once more.
If you read this article (please do; it is also a history lesson), I think you will understand what I mean:
ftp://ftp.aw.com/cseng/authors/elmasri/Dbase3e/chap11.pdf
The problems with the hierarchical model was one of the prime reasons why Edward F. Codd came up with the relational data model (By now, you should know what a data model is, as opposed to a database model ).
I will not say too much about the "XML data model" personally: This forum is assigned to discussions about it...
_________________
All the best,
Alf
Forum Admin
Light travels faster than sound: That's why so many people appear bright until you hear them speak...
www.databasedesign-resource.com
The Database Normalization eBook |
|
