> Sorry if this have been asked before. I just started using > datanucleus JDO. Compare to sybase/oracle/mysql, I can not find much > tools available for simple task such as make a backup, import data, a > gui to browse data.
Perhaps you ought to read up on what JDO is first. It's the first thing I do if I need to understand a new technology. There is a free JDO book linked in the DataNucleus docs. Sybase is an RDBMS, MySQL is an RDBMS, Oracle is an RDBMS. JDO is an **API** for persisting objects to and retrieving objects from a datastore, any datastore, be it RDBMS, XML, ODBMS, JSON, XML, Excel, HBase, Amazon S3, or even ... just even Google BigTable. DataNucleus is an implementation of that API. It isn't a database! -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
