Help designing a DTD about dblp

[Blondeamon]

Hello mates

i am having a problem designing a new DTD over the existing one found at:

http://dblp.uni-trier.de/xml/dblp.dtd

This is the DTD over their original XML file. I used a SAX parser to store specific data from the original file into my relational database.

Now i have to do the following: "Design a DTD to specify an XML document that consists of all publications in the conferences or journals that are co-authored by four specific authors Woo, Kin, Glas and Gert"

In few words what it needs is a DTD that is valid for if one of the 4 people is an author but how do i implement this restriction to 4 values only?

[Blondeamon]

anyone?

[guryia]

plz provide me data about DBLP.......
i wana to project that technique.......

[iceandrews]

Here's a real answer. Look at the web pages below under the "Enumerated attribute values"
http://www.w3schools.com/DTD/dtd_attributes.asp
http://www.xmlfiles.com/dtd/dtd_attributes.asp

Use google and "enumerate DTD" and you'll find other examples. The idea is that you can use the <!ATTLIST> and make a list of valid strings that are allowed in those attributes. you should be able to adjust your <ATTLIST declarations in that DTD to restriction content for those authors and Conf/Journals.