Hi Ryad, There have been plans to port XQuery to MonetDB5, but there has been lack of time and manpower to make this possible. This shortage of resources might change if the database research community regains interest in XQuery in a future. At CWI, a research project, engineering effort must always be justified by ongoing research projects that profit from it. For the moment, it is hard to predict when there will be XML database research projects again, but I would not rule it out. For the moment, you can also just continue to use MonetDB/XQuery. It had not changed much anyway in the past two years, so the change is not dramatic. The software is still available in open source in this April branch of the MonetDB software. So one can still download it in binary, check out the source, change it, compile it and even redistribute it according to the license. CWI for the moment just will not create new releases for it. Peter From: Ryad Ben-El-Kezadri [mailto:ryad.bek@gmail.com] Sent: Friday, April 29, 2011 9:49 AM To: monetdb-users@lists.sourceforge.net Subject: [MonetDB-users] Discontinuation of MonetDB XQuery Hello I am a MonetDB XQuery supporter (http://permalink.gmane.org/gmane.comp.db.monetdb.user/3824) and I am sad that it is discontinued. I was very enthusiastic about the software so I was rather excepting an upgrade to MonetDB5. However I am confident that it will be easy to turn my application to MonetDB5. As a basic XQuery user, my questions are threefold: 1)Are there some explanations for this change (flaws in the design of XQuery 2.0, lack of users, performance limitation)? 2)Is MonetDB5 SQL able to store GB of data (as MonetDB XQuery)? Will we observe performance gains for (time ordered) one dimensional data? 3)Is there an equivalent to the XRPC API? Warm regards Ryad