Nevermind, I found the link that describes Transactions as limiting
queries as well as updates...

http://code.google.com/appengine/docs/java/datastore/transactions.html#What_Can_Be_Done_In_a_Transaction

On Nov 12, 9:51 am, James H <[email protected]> wrote:
> I was under the impression that transaction updates could only occur
> to 1 Entity Group at a time and I understand that.  But, it appears
> during the transaction we also can NOT read another Entity Group...is
> that correct?
>
> If so, that seems to be quite limiting to NOT be able to collect
> information from other Entity Groups A, B (ie reads) in preparation
> for the update to the targeted Entity Group C.  Am I missing
> something?
>
> J
>
> On Nov 10, 4:37 pm, "Ikai L (Google)" <[email protected]> wrote:
>
>
>
> > James,
>
> > For all practical intents and purposes, there are no limits on the number of
> > entity kinds per entity group or limits imposed by the underlying physical
> > hardware.
>
> > On Fri, Nov 6, 2009 at 6:56 PM, James H <[email protected]> wrote:
>
> > > Is there any limit on number of entity kinds per entity group or any
> > > limit on amount of physical storage consumed by a single entity group?
>
> > --
> > Ikai Lan
> > Developer Programs Engineer, Google App Engine- Hide quoted text -
>
> - Show quoted text -

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