-----Original Message-----
From: jcasa...@systemguards.com.ec [mailto:jcasa...@systemguards.com.ec] On
Behalf Of Jaime Casanova
Sent: 18 March 2012 01:04
To: Atri Sharma
Cc: Dave Page; Alvaro Herrera; Pg Hackers
Subject: Re: [HACKERS] Regarding column reordering project for GSoc 2012

On Sat, Mar 17, 2012 at 2:16 PM, Atri Sharma <atri.j...@gmail.com> wrote:
> Hi Dave,
> I believe,with the ALTER command,we plan to give the user power to modify
> ordering . Don’t we?

And how is that different from a view that orders the columns as the
user wishes?

Jaime Casanova         www.2ndQuadrant.com
Professional PostgreSQL: Soporte 24x7 y capacitación


Hi Jaime ,

Well, I believe, my idea is more towards the layers already present in
database systems, rather than views.

1) Views are just a window to some(or all) part of a database. There are
many restriction on views, none of which are applicable to our middle layer.
This is so because, even though the middle layer is encapsulating the
addressing and mapping details from the user , it still provides complete
access and rights to the database according to the user's privilege level.

2) Views are optional, wherever our middle layer is built right in the
database. It is not optional. User can only see the middle layer. It cannot
directly interact with the underlying layers.

Please let me know your feedback and comments.


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