On Aug 19, 2009, at 3:07 PM, Chris Dew wrote:

> http://www.sqlite.org/lang_savepoint.html
> I'm looking for a datastore with the following properties:
> * I need to 'mark' the state frequently (sub second interval).
> * I need to be able to revert the datastore to a previous mark (with  
> no
> appreciable delay).
> * I only need to keep the last few hundred 'marks'. (i.e. I never  
> need to
> revert to a datastore marked more than a few minutes ago.)
>
> The savepoint functionality in sqlite looks to almost fit the bill,  
> but its
> savepoints seem to be nested - i.e. you cannot 'forget about' old  
> savepoints
> while retaining recent savepoints. Is my understanding correct here?

That's correct. "Savepoint" is just another name for "nested  
transaction".

Dan.

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