Hello BaseX-Talk, I am new to the boards and BaseX in general. I have been looking for a open source NoSQL database with expressive query abilities and I think BaseX fits the bill. Its been an exciting journey as I am new to the whole X platform aside from the angle brackets... As I think many are. I am currently exploring the capabilities of RestXQ and the xml stack. I especially like its potential coupled with knockout.js, and a truly flexible RESTful metadata/hypermedia driven api. I have implemented an api of this nature in .Net however the metadata and querying capabilities are hindered and unnecessarily complex where I feel xml and XQuery make this dynamic orchestration quite gracefully. Unfortunately I am stuck now that I am exploring referential relationships and xml. I am trying to understand the support BaseX and XML in general has for referential nodes especially when dealing with queries. For example I know the xml standard defines id and idref however I have not been able to find any documentation on these in BaseX or XML in general. For example does BaseX handle idiosyncrasies of id and idref or must I handle these in my queries? For example: let $context := <item id="10"> <child idref="2" /><item><item id="20"> <child idref="2" /> <child idref="1" /></item><item id="30" /> <child id="1" name="firstChild" /><child id="2" name="secondChild" /> for $itemWithFirstChild in $context/item[child/@name = 'firstChild']return $itemWithFirstChild/@id I would like this to return "10 20"Now this example uses a dynamic context node however in the application these would exist as nodes in the database... If it does fully support this how do I enable it or get it to work? Also what about XLink? Any help would be greatly appreciated. Thanks again for your time.- James