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...