On Tue, 19 Oct 2004, Keith Herold wrote:

>Ummm...  Sure, but not really my question, either.  Not questioning the
>wisdom, just the technical issues.  Perhaps someone can point me to the
>relevant archives so I can look?


Ah, OK, I see what you mean.

Probably quite hard, as not only has the page layer changed (to implement
the increased concurrency and different page sizes), but also the btree
layer has changed to support manifest typing and blobs, plus changes to
the btree structurs itself etc, etc.

Compare to the SQLite 2.x migration, where the page layer has besically
been unchanged since 2.1, and most changes being at layers above the
btree.

I couldn't point you to any relevent threads or archives, except the
source itself. The cvs repository contains all the old documentation from
the website.


>
>--Keith
>


Christian


>-----Original Message-----
>From: Christian Smith [mailto:[EMAIL PROTECTED]
>Sent: Tuesday, October 19, 2004 10:14 AM
>To: [EMAIL PROTECTED]
>Subject: RE: [sqlite] PHP5 && SQLite3
>
>
>On Tue, 19 Oct 2004, Keith Herold wrote:
>
>>Out of curiosity, how hard would it be to build a translation layer?  I
>>suppose it's easier to keep both versions around, and upgrade when
>>necessary, but as a technical problem, it's at least interesting?  Only
>>downwardly, of course, so there would be no expectation that 2.X could
>>use 3.X, just the reverse.  It had sounded as if only the file format
>>was the problem; is it more than that?
>>
>>I'm not pushing, in any sense, just wondering if anyone has looked at
>>this issue with an eye to resolving it.
>
>
>There's nothing to resolve. In the discussion of SQLite3 requirements
>earlier in the year, one of the issues that came up was database migration,
>and the concensus on the list at the time was to forgo automatic migration
>to keep the library simple.
>
>Migration can be done very simply using the sqlite/sqlite3 shells and the
>.dump command.
>
>This was a conscious deliberate decision.
>
>
>>
>>--Keith
>>
>
>Christian
>
>
>

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