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A mainframe computer, informally called a mainframe or big iron, [1] is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such as censuses, industry and consumer statistics, enterprise resource planning, and large-scale transaction processing.
These included Automatic System Facility (ASF), which made use of a pre-existing IDMS feature called LRF (Logical Record Facility). ASF was a fill-in-the-blanks database generator that would also develop a mini-application to maintain the tables.
Current IBM mainframes run all the major enterprise transaction processing environments and databases, including CICS, IMS, WebSphere Application Server, IBM Db2, and Oracle. In many cases these software subsystems can run on more than one mainframe operating system.
IBM CICS (Customer Information Control System) is a family of mixed-language application servers that provide online transaction management and connectivity for applications on IBM mainframe systems under z/OS and z/VSE. CICS family products are designed as middleware and support rapid, high-volume online transaction processing.
Underlying ISPF/PDF is an extensive set of tools that allow application developers to create panel-driven applications, and a set of guidelines to promote consistent use of ISPF functions. A "panel" is a character-based "window" which can encompass all or part of a 3270 session's screen real estate. See Text-based user interfaces.
TSO is most commonly used by mainframe system administrators and programmers. It provides: A text editor [2] Batch job support, including completion notification; Debuggers for some programming languages used on System/360 and later IBM mainframes; Support for other vendors' end-user applications, for example for querying IMS and DB2 databases
The TPF passenger reservation application PARS, or its international version IPARS, is used by many airlines. PARS is an application program ; TPF is an operating system. One of TPF's major optional components is a high performance, specialized database facility called TPF Database Facility (TPFDF).
These applications are sometimes associated with mainframe computers. In software engineering, a monolithic application describes a software application that is designed as a single service. [ 7 ] Multiple services can be desirable in certain scenarios as it can facilitate maintenance by allowing repair or replacement of parts of the ...