Frank,
Locking is a means of achieving concurrency control. So if a system uses locks
to achieve concurrency control, then pessimistic locking would be an appropiate
term. However, there other means of achieving concurrency control which don't
involve what would be tranditionally called locks. Most optimistic concurrency
control schemes fall in this category.
Frank Sauer wrote:
> I would use the terms pessimistic *locking* vs. optimistic *locking*.
> These are the usual terms used, not pessimistic concurrency vs.
> optimistic concurrency.
--Victor
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