Held in conjunction with Parallel Architectures and Compilation Techniques 2007 (PACT2007)International audienceWe claim that building a distributed DBMS on top of a general-purpose grid data-sharing service is a natural extension of previous approaches based on the distributed shared memory paradigm. The approach we propose consists in providing the DBMS with a transparent, persistent and fault-tolerant access to the stored data, within a unstable, volatile and dynamic environment. The DBMS is thus alleviated from any concern regarding the dynamic behavior of the underlying nodes. We report on a feasibility study carried out with our JuxMem grid data-sharing service built on top of the JXTA peer-to-peer platform