java - Spring roo - NonRelational DB support -


i'm looking nonrelational db implementation (objectdb, or xmldb) recommend working/tested sollution, how store objects/xmldata in db?

i recieved additional info, spring roo stores jdo itself, using datastore/datanucleus, , no other db required.

or 2nd option -> mongodb + morphia or 3rd option -> www.db4o.com


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