DBD::AnyData will be right module if you want to use a XML file instead of a database. You can also explore the possibilities of using XML::Database. About the DTD: DTD is the acronym for Document type definition and it is a ASCII file which will contain the specification about sequence of appearance of elements in your XML file and the well-formedness of the XML instance.

For example, if you want to specify that NbSitesInChainN, NbSlicesBetweenStabilization, NbWarmUpCycles and PotentialEnergy has to be in a sequence and PotentialEnergy is the parent element for Error1, Tau1 and Value, they can be specified. There are some tools (called parsers) to compare your XML against the DTD.

I have previously tried using a XML file as a backend instead of a database but I encountered quite a lot of problems when the volume of data increased. Especially during operations like searching, sorting etc., and coding the scripts also consumed considerable time.

In reply to Re: XML file as database by rsriram
in thread XML file as database by Woodchuck

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