hem are usually not able to perform in one second
more than 100 writes in random places. As far as transaction usually consists of several updated pages, 
it leads to average performance about 10 transaction commits per second.<P>

Performance can be greatly increased if you minimize number of commits (larger transactions).
DyBASE is using shadow mechanism for transaction implementation. When object is changed first time
during transaction, shadow of the object is created and original object is kept unchang