Sure Pedro,
I'm not sure which flavor of you desire. Most of my bookmarks are for the
java variety.

The app engine docs are pretty comprehensive although they are sometimes
overwhelming with details.
http://code.google.com/appengine/docs/

Using the Datastore
http://code.google.com/appengine/docs/java/gettingstarted/usingdatastore.html

I've read here that many people find using Objectify a much easier interface
than JDO & JPA
http://code.google.com/p/objectify-appengine/wiki/IntroductionToObjectify

This describes using cron too...
http://code.google.com/appengine/docs/java/config/cron.html

You can also search these community forums for answers to your questions.
http://code.google.com/appengine/community.html

--Andy Stevko

On Fri, Oct 1, 2010 at 11:08 AM, Pedro Ferreira <pedro...@gmail.com> wrote:

> Hi andy, thanks for the quick answer.
>
> Do you have any links that supports that? any documentation about this Big
> Table and Crontab?
>
> Thanks!
>
> 2010/10/1 andy stevko <andy.ste...@gmail.com>
>
>> re 1) app engine provides high level and low level access to a object
>> database called Big Table. There are many other access solutions but, unless
>> you host your own, none of them are oracle/mysql .
>>
>> re 2) app engine has a crontab solution as well as a task queue.
>>
>>
>> On Fri, Oct 1, 2010 at 5:50 AM, Pedro Ferreira <pedro...@gmail.com>wrote:
>>
>>> Hi there,
>>>
>>> I'm starting developing apps for Google Apps. It's great!
>>>
>>> I have 2 important startup questions:
>>>
>>> 1) Is there a "Google Database" ? I need to know if I have to connect
>>> to an external database for storing data, or Google has a native
>>> solution
>>>
>>> 2) I need to perform a scheduled task for maintenance of my
>>> application data, for example, run a script. Does Google have a native
>>> solution for this? Or I have to use external tools to achieve this
>>> goal ?
>>>
>>> Thanks!
>>>
>>> Pedro Ferreira
>>>
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