appengine is designed to be more applicable to run on distributed server.
mysql is relational database and that is not suitable to scale when it
supports sql join (fetch data from multiple tables) in distributed system.
however the design of google bigtable, objects (key - value based) is suited
in this environment.
the reason to use JDO and JPA is to make fellow developers familiar, and JPA
with the ORM is more easier model the objects and its relationship by using
google datastore bigtable.
On Tue, Nov 23, 2010 at 1:19 PM, Tinker Pang kangn...@gmail.com wrote:
Hi
I study app engine a long time, and I have been confused
Why App Engine don't support mySql?
Why use the JDO/JPA?
Best Regards
Tinker
2010/11/23 Didier Durand durand.did...@gmail.com
Hi,
mySql is not (at least currently) directly supported on App Engine,
you have to use the datastore based on Google BigTable and interface
with it via JDO/JPA: see appropriate docs on Dev Guide
You can also use 3rd party extensions to interface: I personally use
Objectify.
You can also probably access a remote mySql server from App Engine but
I would not do it: slow, unsecure, etc..
regards
didier
On Nov 21, 5:58 pm, ankit ankitay91...@gmail.com wrote:
Hi..
I have deployed an application which is connected to my MySQL database
to fetch the values.
I want to know how will google fetch values from my machine and show
the result whenever user runs the application. Do i have to create a
database on google server? If yes than how can i create it.Since i am
using google app on free basis,so do i need to pay for the database or
is it free??
I have read that google supports MYSQL,so how can i use MYSQL as a
backend for my application..
Any idea or suggestions are welcome.
Thanks in advance..
Ankit
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