TRANSFER Programming Manual

Extended Transaction Processing
An Overview of the TRANSFER Delivery System
1–4 40970 Tandem Computers Incorporated
Extended Transaction
Processing
In extended transaction processing, a sender initiates one transaction and then
proceeds immediately to a new one without waiting for work on the original
transaction to be completed. This is frequently called nowait transaction processing.
For an example of extended transaction processing, consider an application that allows
the following actions to take place:
1. You request an inventory report that includes various information in a database
and you request that the report be printed on a local printer that is not available
until 4:30 p.m. that afternoon.
2. You send memos to interactive users to announce the pending availability of the
report.
This kind of transaction processing distributes work over both time and location. It
promotes great efficiency, because it allows people and applications to perform other
work while the TRANSFER delivery system completes their requests.
Extended transaction processing is illustrated in Figure 1-3.
Figure 1-3. Extended (Nowait) Transaction Processing
Start Transaction 1
Return Control to Sender
Start Transaction 2
Return Control to Sender
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