D3
MQSeries Server Interface is Raining Data's implementation of
the IBM MQSeries API (MQI) (see below) in
FlashBASIC. This API is an extension to the standard Pick/BASIC
programming language. The D3 MQI interface is a collection
of BASIC calls. The entire underlying infrastructure to communicate
with the MQSeries server is handled by this API. As a developer,
the benefit of D3 MQSeries is that it allows interoperability
between D3 or other RDBMS-based systems via messaging.
You do not need to worry about setting up a communication layer
and protocol with the foreign system.
D3
MQSeries Server Interfaceprovides ease of integration between
heterogeneous applications. An advantage is D3 MQSeries
can be used between D3 servers for data replication
or Hot Backup solution by adding the MQI subroutine calls to
CALLx functions.
Overall,
with D3 MQSeries Server Interface, the underlying
networking layer is completely hidden from the developer.
For
more information on D3 MQSeries Server Interface,
please send an e-mail to connectivity@rainingdata.com.
About
MQSeries
MQSeries
is a Message Queuing middleware system by IBM. It comprises
a server interface that manages message queues from different
computer systems. A client interface is used to communicate
with a server queue. This client interface is in the form of
an API coupled with a network interface. It is the network layer
that allows applications from different platforms and operating
systems to exchange information. MQSeries shields the developer
from the complexity of data interchange.
The
principle is very simple: Program A sends a message to a selected
queue (a system can have more than one queue) and forgets about
the message. Whenever appropriate, Program B fetches the messages
from the queue for processing. There is no direct interaction
between Program A and Program B. If B detects an error on the
message or needs more information from A, B sends a message
to A via the queue.
Messages
sent between Program A and Program B are straight ASCII text
streams. Before a transaction can be performed, A and B need
to agree on a message format. In many cases, XML is the format
of choice.
MQSeries
serves as a mail P.O. box. Messages are deposited into a numbered
box. Whoever has access to the box then retrieves the messages
in the order they were received.
There
are many advantages to this solution:
- A
and B do not need to know each other.
- A
and B can be running on totally different hardware and software.
They just need to be able to talk to the queue.
- Developers
do not need to worry about communication protocols and network
configurations.
- The
MQSeries API implementations on different platforms are identical;
learn once and use anywhere.
- MQSeries
is cross-platform.
For
more information on MQSeries, please visit IBM's web site at
www.-3.ibm.com/software/ts/mqseries/
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