I have a customer who is already using MarkLogic Server and who is also interested in using Talend to provide MDM across there other disparate database systems. If they wanted to make use of MarkLogic Server instead of eXist as the underlying persistent store used by Talend how might that be done?
MarkLogic Server is not supported by Talend MDM. You may develop a wrapper to integrate it within Talend MDM: it *might* be possible to do ("might" because I don't know MarkLogic Server well enough). But it won't get support so I'm not sure this is something you want.