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Re: Users vs. Schemas

From: Serge Rielau <srielau_at_ca.ibm.com>
Date: Fri, 29 Jun 2007 17:39:46 -0400
Message-ID: <5elcgsF38agkhU1@mid.individual.net>


DA Morgan wrote:
> Serge Rielau wrote:

>> Mark D Powell wrote:
>>> For explaining the differences between a USER and a SCHEMA to a
>>> developer looking at the CREATE USER and CREATE SCHEMA command results
>>> is a good idea.
>>>
>>> But is there a consensus of how best to describe PUBLIC?
>> If one takes a step back, or a couple, things come into focus:
>> Conceptually schemas and users are unrelated beyond the generic 
>> concept of object ownership, which is a property to most objects
>> (such as tables).
>> A schema is best described as a "directory" in a file system

>
> Are you still using tape-sort technology too?
>
> These may help:
> http://www.psoug.org/files/files_vs_db.pdf
> http://www.psoug.org/files/why_databases.pdf
>
> > Now you can bring it back to a specific implementation. In this case
>> Oracle where the mapping between user and schema is 1-0..1.
>> Hence the confusion. It's like the relationship between mass (gram) 
>> and force (N).

> I wasn't confused before reading that last paragraph. <g>
Ignorance is bliss. Perhaps if you actually read the post and reflect on it instead of acting all pavlovian at the first mentioning of the word "file" things come into focus.

Cheers
Serge

-- 
Serge Rielau
DB2 Solutions Development
IBM Toronto Lab
Received on Fri Jun 29 2007 - 16:39:46 CDT

Original text of this message

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