> 1. Please explain the above in detail.
It depends on the type of table you're using. If you're using a table type
that only supports table-level locking, then each transaction is isolated by
being suspended until the previous transaction is done. This is slower
if you do a lot of longer transactions but quite safe.
> I think the only difference is functions(COMMIT, ROLLBACK) support.
This is true, for some table types -- for others, you'll find things work
as you expected -- see InnoDB or that other table type (Gemini :-).
--
Michael T. Babcock
http://www.fibrespeed.net/~mbabcock/
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