Again I think this slide is explaining this: Each layer is on top of each other, meaning they depend of the lower one, and you have the feature matrix available for each layer.
i.e: query on property are not available on layer >= megastore, and bigtable only support get operation. Hope that helps. On Fri, Sep 9, 2011 at 11:45 AM, Bruce Aloe <[email protected]> wrote: > Hi, > > I noticed the figure in slide 7 of that presentation and it presents > the datastore layers. > > However, what i am out for is the figures that shows the visualized > relation among GAE datastore, Megastore and Bigtable. For example, > Megastore contains GAE datastore, Bigtable contains Megastore, maybe > Bigtable can be queried by GQL, etc. > > Any help is appreciated. > > Bruce > > > On Sep 9, 11:25 am, Johan Euphrosine <[email protected]> wrote: >> 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,BruceAloe<[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,BruceAloe<[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 >> >> >> > -- >> >> > You received this message because you are subscribed to the Google >> >> > Groups >> >> > "Google App Engine" group. >> >> > To post to this group, send email to [email protected]. >> >> > To unsubscribe from this group, send email to >> >> > [email protected]. >> >> > For more options, visit this group at >> >> >http://groups.google.com/group/google-appengine?hl=en.-Hide quoted text - >> >> >> - Show quoted text - >> >> > -- >> > You received this message because you are subscribed to the Google Groups >> > "Google App Engine" group. >> > To post to this group, send email to [email protected]. >> > To unsubscribe from this group, send email to >> > [email protected]. >> > For more options, visit this group >> > athttp://groups.google.com/group/google-appengine?hl=en. >> >> -- >> Johan Euphrosine (proppy) >> Developer Programs Engineer >> Google Developer Relations- Hide quoted text - >> >> - Show quoted text - > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- Johan Euphrosine (proppy) Developer Programs Engineer Google Developer Relations -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
