On Mon, May 19, 2014 at 12:29 PM, Dimitry Sibiryakov <s...@ibphoenix.com>wrote:
> :
> > Can you explain "erase in place" briefly?
>
> I simply call update_in_place() with delete stub from VIO_erase() if
> the head record
> version is marked with the same transaction number. I.e. the same logic
> used as in
> VIO_modify(). It is undone as usual with VIO_backout().
>
To restate, if one transaction first creates a version of a record then
deletes it, you handle
it the same way you would a transaction that created a record version then
updated it - without
declaring any savepoints.
If a transaction deletes a record in which the latest version was created
by a different transaction,
you create a separate deleted stub, just as before.
Right?
Cheers,
Ann
>
> --
> WBR, SD.
>
>
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