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April 2003, Week 4

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Subject:
Re: Image Transaction Logging
From:
Lars Appel <[log in to unmask]>
Reply To:
Lars Appel <[log in to unmask]>
Date:
Sun, 27 Apr 2003 17:30:05 +0200
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At 06:25 26-04-03 -0400, Simpkins, Terry wrote:

> DBBEGIN & DBEND intrinsics ... to define the "logical" transactions.

Very good point. Without DB(X)BEGIN and DB(X)END the logfile will not
be able to recover logically consistent transactions (i.e. re-apply
completed transactions and drop incomplete ones). It will only "replay"
the recorded sequence of "atomic" image intrinsic calls like DBPUT or
DBUPDATE or DBDELETE, as far as I understand.

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