Convert ER model to XML model

[sjack181]

Let's say that I have an ER diagram with two entities E1 and E2 which are connected by a relation R.R can be of 3 kinds:1) E1 ---(0,N)--- R ---(0,N)--- E22) E1 ---(1,1)--- R ---(0,N)--- E23) E1 ---(1,1)--- R ---(1,1)--- E2When I want to convert it to an XML schema what are the best guidelines to keep in mind?I would translate them like this:1) Create an E1.xml file which contains as sons of E1 all the E2 entities or viceversa.2) This is more interesting. I think it is better to create an E1.xml like above to avoid too much duplication (that we would obtain by creating an E2.xml file). I am not to sure on this.3) Here we can create an E1.xml or an E2.xml file. I think that there are not strange problems.Which are the best ways to make a conversion between these 2 models?