Data verification in an XML document.

[Joseph Nolting]

Hi,

I'm new to XML and I am working on a project where I need to verify some of the data in the XML document. The tests I will need to verify include: if a certain element exists then this element must exist, or whether or not a certain attribute exists and has a value, or simply if an element contains text content. My question is, what is the best method to go about performing these verifications? Using a schema, DTD, XSLT, or some other method?

Thank you,

Joseph Nolting

 

[Patrick TJ McPhee]

% some of the data in the XML document. The tests I will need to verify % include: if a certain element exists then this element must exist, or % whether or not a certain attribute exists and has a value, or simply % if an element contains text content.

Schema was made for these kinds of test. Actually, except for ensuring an element has text content, you could do it with a DTD as well. To ensure one element exists when another does, you either have to ensure that they are adjacent or do a lot of typing.