Re: Billing Invoice Process

[pluta@xxxxxxxxxxxxxxxxxx]

>Again , not to show my ignorance on the BPCS system, but I haven't found any
>files labeled at TDR.  Are these AS/400 based files or do they reside
>somewhere else.

TDR stands for "Transaction Data Repository".  TDR is not the name of a file,
it's a generic term that applies to any transaction file used by CPR, which in
turn stands for "Configurable PRocessing".  Sorry about that, I couldn't come up
with a better acronym.  To be honest, I didn't think "CPR" would get past the
powers that be when I came up with it, but it did.  CPR was originally designed
to support the ill-fated SOM (Sales Order Management) product.

Originally we used data queues, but because of size and performance limitations
(data queues were abominably slow in the early days) we also had to support
database files.  We needed a generic term that didn't imply the method of
storage.  If I'm not mistaken, Ron Scheuman came up with the term TDR, although
he may not admit to it these days.  Lorraine Ford put in the restart/recovery
capabilities; TDR's are remarkably robust - the original design allowed you to
pull the plug on the AS/400, restart it, and the servers would pick up where
they left off.  The team that put CPR together was one of the best I've ever had
the honor to work with.  I'd list them, but I think they want to forget those
days - they were working for me at the time [grin].

Anyway, there are lots of TDRs.  Some are used as input to the servers, some are
used for responses back to the clients.  This is a true message-based
client/server architecture, where the client makes a request to a server such as
GET or UPDATE, and the server returns a response.  All the data is passed
through the TDR, and then is deleted once it is used, so the TDR's can end up
with tons and tons of deleted records.  I'm not sure what the naming conventions
for the TDRs are in 6.0; other people have suggested that they start with "ZQ",
which makes sense, since I all the CPR files started with ZQ.


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