I would like some help and advice on how to model my entities using
JDO on GAE. My problem is this, I have a bunch of Users and each User
may create zero or more Tracks. Users may exist without a Track but
Tracks may not exist without a User who created them. Other attributes
on the User and the Track may updated. I would like to be able to
query the Tracks and retrieve some attributes from the User who
created the Track. The attributes from the User may get updated. In
SQL this would be

select u.displayName, t.trackName from User u, Track t, where
t.userId=u.userId

I have some ideas and have tried various things but this isn't a post
on why doesn't something work, more of what is the best practice to
solve this problem.

thanks <M

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