This is in the presentation that ikai linked, slide 7:
http://www.slideshare.net/ikailan/introducing-the-app-engine-datastore/7

On Fri, Sep 9, 2011 at 9:44 AM, Bruce Aloe <[email protected]> wrote:
> Hi Ikai,
>
> Thanks for your useful links about the relation among GAE datastore,
> Megastore and Bigtable.
>
> Do you have a figure to show  the relation among GAE datastore,
> Megastore and Bigtable? for example which one is on top of another
> one? which one can be queries by GQL and which one can not.
>
> Or if you don't have any such figure, do you know where i can find it?
>
> I really want to clarify everything among GAE datastore, Megastore and
> Bigtable.
>
> Any help is appreciated.
>
> Bruce
>
> On Sep 7, 9:22 pm, "Ikai Lan (Google)" <[email protected]> wrote:
>> The datastore is built on top of Megastore, an abstraction layer on top of
>> Bigtable that allows for transactions and queries. High replication is a
>> feature of Megastore.
>>
>> Some presentations here:
>>
>> Intro to the 
>> datastore:http://www.slideshare.net/ikailan/introducing-the-app-engine-datastore
>>
>> Intro to high 
>> replication:http://www.slideshare.net/ikailan/2011-auggddmexicocityhighreplicatio...
>>
>> --
>> Ikai Lan
>> Developer Programs Engineer, Google App Engine
>> plus.ikailan.com | twitter.com/ikai
>>
>>
>>
>> On Wed, Sep 7, 2011 at 9:36 AM, Stephen <[email protected]> wrote:
>> > On Wed, Sep 7, 2011 at 3:32 PM, Bruce Aloe <[email protected]> wrote:
>>
>> > > I store some data in GAE data store and can not find any documents
>> > > regarding the relation between GAE data store and Google Bigtable.
>>
>> >http://research.google.com/pubs/pub36971.html
>>
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>>
>> - Show quoted text -
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-- 
Johan Euphrosine (proppy)
Developer Programs Engineer
Google Developer Relations

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