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5. Transactional programming environment
5.1 Transaction programming evolutions
Transactional programming is, by its very nature, interactive and concurrent, essentially using shared resources (logical processors, memory, database data). It must also be resistant to the failures mentioned above.
In the early days of transactional applications, all these aspects were dealt with by the application itself, with the result that each application was extremely difficult to design and program, and required a considerable amount of code to be produced (which, of course, translated into costs).
In the 1970s, transactional monitors appeared which took over the following aspects:
programming communication interfaces: connecting and disconnecting...
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Transactional programming environment
Outlook
Bibliography
Product range
Transactional manufacturers
Most computer manufacturers offer transactional systems (for complete and up-to-date information, please refer to the individual product descriptions).
IBM offers several transactional environments. The oldest is IMS (Information Management System). This is the reference transactional environment for very large IBM systems.
The more recent...
Standardization
The de facto standard for cooperative transaction protocols is IBM's APPC (Advanced Program to Program Communication) protocol.
OSI has standardized a cooperative transaction protocol equivalent to APPC under the name OSI/TP, which is built on the OSI session, whereas APPC is built on IBM's SNA session. Applications using APPC are portable to OSI/TP.
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