On 20 Oct 2005 at 5:56, Bernard Savoie wrote:

> On Oct 19, 2005, at 13:00, [EMAIL PROTECTED] wrote:
> 
> Hiro wrote:
> >
> > One more thing.  Even though the bug of loosing data is pretty bad, 
> > you can't call it file corruption unless the file cannot be opened
> > without error message.
> 
> Sorry to disagree with this one, corrupt for me means that the file 
> does not deliver the material which was saved to it, whether you get 
> an error message or not.

>From a database point of view (and Finale files are database files), 
it's definitely corruption, and of the logical type. There are two 
types of corruption in a database:

1. logical corruption

2. content corruption.

Logical corruption means that the data structures in which your 
information is stored are corrupted. It's quite clear from someone's 
post yesterday (can't remember exactly who it was) who did a file 
integrity check that the internal structures are completely hosed -- 
a whole lot of pointers connecting data to their usage information 
has been lost.

Content corruption refers to a different kind of corruption, not 
structural to the storage format, but inherent to the information 
being stored in the data structure. 

If, for instance, you copied a passage of music over an existing 
passage, the music (the content) would be corrupted, though the 
Finale file is still structurally 100% *not* corrupted. It's the 
information being stored that is now out of whack with what's 
intended, and that's a different type of corruption.

> So until this problem is diagnosed, I would call a file having this 
> occurrence, perhaps not corrupt, but potentially corrupt and 
> certainly suspect.

There's no question that it's a form of corruption of Finale's 
internal data structures and it's causing loss of data.

-- 
David W. Fenton                        http://www.bway.net/~dfenton
David Fenton Associates                http://www.bway.net/~dfassoc

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