Side Note: IBObjects permits datasets to be defined with their
IB_Transaction property left as '<default>' - like the "Auto Query Grid" in
the demonstration. This causes each dataset to create its own internal
transaction (named as "tr" + dataset.name) with AutoCommit = true and
Isolation = tiCommitted. This capability can be useful when building "quick
and dirty" example applications but I would not recommend this approach for
real-world applications. It is generally much better to define explicit
transactions so that changes from more than one dataset can be managed
through a particular transaction operating as required for the particular
application. (You can prevent the use of '<default>' transactions by
setting TIB_SessionProps.AllowDefaultTransaction = false - which can be
useful in ensuring that you dont "forget" to explicity define a dataset's
transaction property.)

Alexandre Perestrelo



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