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COBOL (/ ˈ k oʊ b ɒ l,-b ɔː l /; an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use. It is an imperative, procedural, and, since 2002, object-oriented language.
The Z390 and zCOBOL is a portable macro assembler and COBOL compiler, linker, and emulator toolkit providing a way to develop, test, and deploy mainframe compatible assembler and COBOL programs using any computer that supports J2SE 1.6.0+ runtime.
CICS applications comprise transactions, which can be written in numerous programming languages, including COBOL, PL/I, C, C++, IBM Basic Assembly Language, Rexx, and Java. Each CICS program is initiated using a transaction identifier.
A Java program wishing to initiate an OLA call outbound may be implemented as either a servlet or EJB. The Java program codes to the supplied JCA resource adapter (ola.rar) using the class files supplied in the development tooling support. External address spaces that are the target of the outbound call must be in a state ready to accept the call.
Use of IBM COBOL was so widespread that Capex Corporation, an independent software vendor, made a post-code generation phase object code optimizer for it. [3] The Capex Optimizer became a quite successful product. [4] Although the IBM COBOL Compiler Family web site [5] only mentions AIX, Linux, and z/OS, IBM still offers COBOL on z/VM and z/VSE.
Now LINC is known as Unisys Enterprise Application Environment (EAE) and can generate COBOL code for Burroughs & Sperry mainframes, Microsoft Windows, and various Unix and Linux platforms. It will also generate GUI front-end clients in Java; Visual Basic 6 clients; Active Server Pages; Web services for Microsoft IIS; ASP.NET; VB.NET
As it is an assembly language, BAL uses the native instruction set of the IBM mainframe architecture on which it runs, System/360, just as the successors to BAL use the native instruction sets of the IBM mainframe architectures on which they run, including System/360, System/370, System/370-XA, ESA/370, ESA/390, and z/Architecture.
The system is typically used in business and banking, and applications are often written in COBOL. COBOL programs were traditionally used with transaction processing systems like IMS and CICS. For a program running in CICS, special EXEC CICS statements are inserted in the COBOL source code.