The interfaces provided for the C and COBOL programming languages are similar. Parameter blocks are used to pass data between the Client application and the ECI, EPI and ESI.
A user application must be constructed as a single process, though in environments in which a process can generate several threads, the user application can be multi-threaded.
Note that the COBOL programming language is only available for Windows®.
Because the COBOL and C field names are similar, most of the examples in this chapter only use the C names. Refer to Table 1, Table 1, and Table 1 for a comparison.