Your application needs to move data from one place to another. Perhaps you are transmitting data between Java and C++, across a network connection, or through an ORB interface. Whenever you design for data transfer, you must ask yourself:
What data transfer mechanism am I going to use?
Files, to persist data for later retrieval? Sockets, to move data across a network connection? Or an ORB, to fit into the big picture of a system based on CORBA?
If I'm going to use sockets or files as the mechanism, what format should I use?
One of the Tools.h++ virtual streams formats, for a system primarily implemented in C++? Or the Java object serialization format, for a Java-based system?
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