[Zope] Philosophical question - Zope Objects vs Entities in a RDBMS

[Michel Pelletier]

> -----Original Message-----
> From: Rowan Hick [mailto:rowan@softtech.co.nz]
> Sent: Wednesday, December 08, 1999 2:59 PM
> To: zope@zope.org
> Subject: [Zope] Philosophical question - Zope Objects vs Entities in a
> RDBMS
> 
> 
> Now Zope comes along with the ability to create and persist objects
> without the need for a relational database. Wooohooo... all my prayers
> have been answered, or have they?.
> 
> Q1. Has anyone tried to build webapplications with large 
> (maybe into the
> 10's of thousands) numbers of Zope objects?

Yes.

> Q2. How much more or less efficient is Zope for storing a 
> piece of data
> over a traditional relational database ?

That's a pretty loaded question, they all behave differently.  ZODB is
comparable in 'efficiency'.

> Q3 (I'm a newbie here) Can a python external method access 
> Zope objects
> ?  Eg if I create a task object from a ZClass can I then do 
> things with
> it from a python script?

Yes.

> Q4. I think I remember seeing a post about the Zope database being a
> single large file posing problems with the Linux filesystem.. or was
> that the windows filesystem.. if so then that could limit Zope's
> potential in a commercial production enviroment, surely ?? If this is
> true what have people done to try and get around this, ie archiving
> objects (however that could occur) etc.. ?

Zope stores its objects in one file.  Linux  on 32 bit systems has a 2GB
file size limiation.

-Michel