RE: What is DRDA?

["Weatherly, Howard" <hweatherly@xxxxxxxxxxxx>]

Joe,

DRDA competes against ODBC, as to the differences, I am not familiar
enough with ODBC to say. DRDA is used mostly by IBM for database
connectivity between multiple computer systems in a network and uses SNA
and CPIC (Systems Network Architecture / Communications Program
Interface Side Information). "DRDA is a set of protocols that
coordinates communications between the systems. DRDA describes two
levels of architecture: remote unit of work and distributed unit of
work. All DRDA products support remote unit of work. With remote unit of
work, you can access one remote relational database manager with
multiple requests within one unit of work." Ref: Distributed Relational
Database Architecture Connectivity Guide SC26-4783-02 It is my
understanding that ODBC ..Object Data Base Connectivity does pretty much
the same thing but uses different protocols to accomplish the task. One
thing that I am certain about, is that to use products such as Data Hub
and Data Propagator Relational, you must use DRDA, of course since IBM
is writing much of their software for Windows systems, this may have
changed?

Hope this helps,

Howard 

        ----------
        From:  Joe Teff[SMTP:jteff19@idt.net]
        Sent:  Tuesday, February 24, 1998 8:44 PM
        To:  Midrange dot Com
        Subject:  What is DRDA?

        I have come across the term DRDA (Distributed Relational
Database Architecture) several times and I'm not sure what it really is?
Can someone explain this in English? What does it compete against and
how does it differ from these things? Thanks.

        Joe Teff
        QDS
        Bloomington, MN
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