Re: [stellation-res] A database proposal, for fixing 22135.

[Dave Shields <shields@xxxxxxxxxxxxxx>]

On Fri, Aug 09, 2002 at 10:18:01AM -0500, Florin Iucha wrote:
> [Answer to the second half of Marks' reply. I have to think some more
> about the first half.]
> 
> On Fri, Aug 09, 2002 at 10:44:29AM +0000, Mark C. Chu-Carroll wrote:
> [snip]
> 
> 
> Adding stuff transactionally is much easier than updating/deleting it.
> 

This is very important, and came up during a discussion here at IBM earlier
this afternoon. The representation of artifact content should be additive, so
that adding a new version of a text (or compound) artifact just causes new rows
to be added, and *no* change to the rows already in the repository that represent 
the prior versions.  The lack of this property was one of the causes of our recent 
repository problem, and putting this property in, even at the expense of 
increasing the repository size, is well worth the increased reliability
(and our confidence) that should result.

dave
-- 
Dave Shields, IBM Research, shields@xxxxxxxxxxxxxx.