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From what I have been able to find, UPIC looks like a proprietary
Siemens client-server protocol that allows a Unix client to connect
to UTM applications, UTM being the Siemens Nixdorf transaction monitor
that should be a basic component of their IN SMP.
Hope this helps a little,
Philippe
The OLTP server from Siemens Nixdorf
UTM (Universal Transaction Monitor) is Siemens Nixdorf's strategic
product for transaction-secure communication between applications
that are distributed over networks. In addition, the UTM-D, UPIC
and OpenCPIC products can be used with distributed applications.
Since UTM-D supports the two-phase-commit protocol and thereby UTM
transactions are coordinated with database transactions, a database
system update on different computers is possible with a single
transaction. For instance, INFORMIX or ORACLE databases can be
linked to UDS or SESAM databases in this way.
Using UPIC (MS-Windows/SINIX), OpenCPIC (SINIX) and UTM-D
(BS2000/OSD), the user can connect client programs in UNIX or
MS-Windows to UTM applications. The CPIC interface from UPIC
implements presentation applications under MS-Windows or OSF/Motif.
All UTM components correspond to the architecture of the X/Open
model. Up until now, the XA interface has been approved. This
interface, supported by UTM, permits transaction-secure connection
to database-systems such as SESAM/SQL,
UDS/SQL, INFORMIX and ORACLE. The X/Open program interfaces, CPI-C
and XATMI, enabling cross-system communication via the OSI TP
protocol from the ISO are now also supported.
Using UTM, you can be sure of fast response times even if the number
of users is high. One of the reasons for this is the low
administration outlay, since only a few system tasks are needed to
process numerous user requirements.
All in all, Siemens Nixdorf's OLTP products represent all the
components required for an OLTP solution that is as optimal as it
is individual.
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