Suggest an XML/DTD verifier for Linux?

[marx2k]

I currently have a class where I am writing XML and DTD schemas and I am looking for a standalone program that will run through my schemas and verify them or give detailed error reports?

I have 2 plugins for Firefox but they are a bit convoluted.

I am using the XML Developer Toolbar as well as Total Validator 4.2

Does anyone have any other suggestions?

[Mr_Smiley]

I have found XML Copy Editor (http://xml-copy-editor.sourceforge.net/) useful.

[AZzKikR]

Why DTD and not XSD?

[marx2k]

Perhaps I don't fully understand the difference between the two yet. I am currently doing simple XML and DTD writeups and just want to find something that will verify that the DTD I am writing that defines the XML within the document is valid. I will try using the suggested solution.

[marx2k]

Followup: This is EXACTLY what I was looking for and MORE. Thank you very much for the suggestion!

[Mr_Smiley]

Followup: This is EXACTLY what I was looking for and MORE. Thank you very much for the suggestion!
Not a problem. I was looking for the same sort of thing not that long ago.

[AZzKikR]

Perhaps I don't fully understand the difference between the two yet. I am currently doing simple XML and DTD writeups and just want to find something that will verify that the DTD I am writing that defines the XML within the document is valid. I will try using the suggested solution.

DTD is older and in my opinion, obsolete. XML Schema (XSD) can do anything DTD can, and even more. A summary of DTD vs XSD:

DTD:

Is old, and derived from SGML;
No support of new XML features. Most important is namespaces. If you are going to work with XML, SOAP and that sort of things, namespaces are very important;
DTD uses a non-XML syntax;
Therefore, DTD is not very easy to understand IMHO.


XSD:

Is new;
Support fore namespaces;
Uses XML syntax, and therefore easier to extend, and understand;
Has better support for datatypes;
Can include regular expressions for validating XML attribute-values or node-values;
Has recommendation status from W3C.

[LaRoza]

In XSD, you get phrases like this, quoted from my book:



The element element defines an element.


Which is true, but how does one explain THAT.

[cwaldbieser]

DTD is older and in my opinion, obsolete. XML Schema (XSD) can do anything DTD can, and even more. A summary of DTD vs XSD:

DTD:

Is old, and derived from SGML;
No support of new XML features. Most important is namespaces. If you are going to work with XML, SOAP and that sort of things, namespaces are very important;
DTD uses a non-XML syntax;
Therefore, DTD is not very easy to understand IMHO.


XSD:

Is new;
Support fore namespaces;
Uses XML syntax, and therefore easier to extend, and understand;
Has better support for datatypes;
Can include regular expressions for validating XML attribute-values or node-values;
Has recommendation status from W3C.


I always liked schematron http://www.schematron.com/overview.html
I found it to be a easier to use when describing some things that were hard to express in XSD.