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hi this is Ben Constable from spark systems introducing args support for Enterprise architect 9.3 I'll begin by introducing the MDG technology for argis that technology includes a uml profile for representing arjs Concepts it gives us a model pattern or template in which we can build up our arjs schema and it provides new diagram types specifically for visualizing those arjs designs using those three capabilities we'll build a simple model of an arc Goos schema we'll model a feature class a table and we'll relate those two elements using a relationship class we'll then expand upon that basic model we include an example of uml abstract class and some examples of the arjs concept of subtypes based on that example we'll generate an arjs schema for our cataly so out of Enterprise architect we'll export an XML workspace document and import it into our catalog finally we'll reverse engineer an existing arjs schema now this can be useful in a couple of scenarios firstly we may have a legacy G