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Control Program Facility
Control Program Facility (CPF) is the operating system of the IBM System/38. CPF represented an independendent line of development at IBM Rochester, and was unrelated to the earlier and more widely used System Support Program operating system. CPF evolved into the OS/400 operating system, which was originally known as XPF (Extended CPF). While CPF is considered to be the operating system of the System/38, much of the hardware and resource management of the platform is implemented in the System/38's Horizontal and Vertical Microcode. Description of the libraries * QGPL – general purpose library * QSYS – system library * QSPL – spooling library * QTEMP – temporary library * QSRV – system service library * QRECOVERY – system recovery library Data storage In most computers prior to the System/38, and most modern ones, data stored on disk was stored in separate logical files. When data was added to a file it was written in the sector dedicated to this, or if the sect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PL/I
PL/I (Programming Language One, pronounced and sometimes written PL/1) is a procedural, imperative computer programming language initially developed by IBM. It is designed for scientific, engineering, business and system programming. It has been in continuous use by academic, commercial and industrial organizations since it was introduced in the 1960s. A PL/I American National Standards Institute (ANSI) technical standard, X3.53-1976, was published in 1976. PL/I's main domains are data processing, numerical computation, scientific computing, and system programming. It supports recursion, structured programming, linked data structure handling, fixed-point, floating-point, complex, character string handling, and bit string handling. The language syntax is English-like and suited for describing complex data formats with a wide set of functions available to verify and manipulate them. Early history In the 1950s and early 1960s, business and scientific users programmed fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM Future Systems Project
The Future Systems project (FS) was a research and development project undertaken in IBM in the early 1970s to develop a revolutionary line of computer products, including new software models which would simplify software development by exploiting modern powerful hardware. The new systems were intended to replace the System/370 in the market some time in the late 1970s. There were two key components to FS. The first was the use of a single-level store that allows data stored on secondary storage like disk drives to be referred to within a program as if it was data stored in main memory; variables in the code could point to objects in storage and they would invisibly be loaded into memory, eliminating the need to write code for file handling. The second was to include instructions corresponding to the statements in high-level programming languages, allowing the system to directly run programs without the need for a compiler to convert from the language to machine code. One could, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Control Language
The Control Language (CL) is a scripting language originally created by IBM for the System/38 Control Program Facility and later used in OS/400 (now known as IBM i). It bears a resemblance to the IBM Job Control Language and consists of a set of command objects (*CMD) used to invoke traditional programs or get help on what those programs do. CL can also be used to create CL programs (congruent to shell scripts) where there are additional commands that provide program-like functionality (IF/ELSE, variable declaration, file input, etc.) Although CL is a scripting language for system administration, it is used mainly to create compiled programs. The use of interpreted CL scripts through the SBMDBJOB command is in fact extremely limited. While thousands of commands were written by IBM developers to perform system-level tasks like compiling programs, backing up data, changing system configurations, displaying system object details, or deleting them, commands are not limited to sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BASIC
Basic or BASIC may refer to: Science and technology * BASIC, a computer programming language * Basic (chemistry), having the properties of a base * Basic access authentication, in HTTP Entertainment * Basic (film), ''Basic'' (film), a 2003 film * Basic, one of the Galactic Basic, languages in ''Star Wars'' Music * Basic (Glen Campbell album), ''Basic'' (Glen Campbell album), 1978 * Basic (Robert Quine and Fred Maher album), ''Basic'' (Robert Quine and Fred Maher album), 1984 * B.A.S.I.C. (Alpinestars album), ''B.A.S.I.C.'' (Alpinestars album), 2000 * Basic (Brown Eyed Girls album), ''Basic'' (Brown Eyed Girls album), 2015 * B.A.S.I.C. (The Basics album), ''B.A.S.I.C.'' (The Basics album), 2019 Places * Basic, Mississippi, a community in the US * BASIC countries, Brazil, South Africa, India and China in climate change negotiations Organizations * BASIC Bank Limited, government owned bank in Bangladesh * Basic Books, an American publisher Other uses * Basic (cigarette), a brand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COBOL
COBOL (; 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. COBOL is primarily used in business, finance, and administrative systems for companies and governments. COBOL is still widely used in applications deployed on mainframe computers, such as large-scale batch and transaction processing jobs. Many large financial institutions were developing new systems in the language as late as 2006, but most programming in COBOL today is purely to maintain existing applications. Programs are being moved to new platforms, rewritten in modern languages, or replaced with other software. COBOL was designed in 1959 by CODASYL and was partly based on the programming language FLOW-MATIC, designed by Grace Hopper. It was created as part of a U.S. Department of Defense effort to create a portable programming language for data pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RPG III
RPG III is a dialect of the RPG programming language that was first announced with the IBM System/38 in 1978. An upgraded version, RPG IV, was introduced in 1994. In 2001 RPG was again updated to remove a number of column restrictions. RPG continues to be upgraded on a regular basis. The last fixed form restrictions were removed in 2015. Other than sharing some opcodes and terminology, modern RPG IV is visually very different from RPG III. Overview Unlike predecessors, RPG III uses external file descriptions, which means that disk files are built and RPG III programs are attached to them at compile time. Some other noteworthy changes from RPG II include: 1. The object cannot be replaced while active. 2. The object in a test library cannot be moved unilaterally into production. It must be compiled in the library associated with the external files (unlike System Support Program, Control Program Facility Control Program Facility (CPF) is the operating system of the IBM Syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middleware (distributed Applications)
Middleware in the context of distributed applications is software that provides services beyond those provided by the operating system to enable the various components of a distributed system to communicate and manage data. Middleware supports and simplifies complex distributed applications. It includes web servers, application servers, messaging and similar tools that support application development and delivery. Middleware is especially integral to modern information technology based on XML, SOAP, Web services, and service-oriented architecture. Middleware often enables interoperability between applications that run on different operating systems, by supplying services so the application can exchange data in a standards-based way. Middleware sits "in the middle" between application software that may be working on different operating systems. It is similar to the middle layer of a three-tier single system architecture, except that it is stretched across multiple systems or a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributed Data Management Architecture
Distributed Data Management Architecture (DDM) is IBM's open, published software architecture for creating, managing and accessing data on a remote computer. DDM was initially designed to support record-oriented files; it was extended to support hierarchical directories, stream-oriented files, queues, and system command processing; it was further extended to be the base of IBM's Distributed Relational Database Architecture (DRDA); and finally, it was extended to support data description and conversion. Defined in the period from 1980 to 1993, DDM specifies necessary components, messages, and protocols, all based on the principles of object-orientation. DDM is not, in itself, a piece of software; the implementation of DDM takes the form of client and server products. As an open architecture, products can implement subsets of DDM architecture and products can extend DDM to meet additional requirements. Taken together, DDM products implement a distributed file system. Distr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capability-based Operating System
Capability-based operating system generally refers to an operating system that uses capability-based security. Examples include: * Hydra *KeyKOS *EROS *Midori *seL4 *Genode *Fuchsia * HarmonyOS (Microkernel) (HarmonyOS NEXT) *Phantom OS *Control Program Facility Control Program Facility (CPF) is the operating system of the IBM System/38. CPF represented an independendent line of development at IBM Rochester, and was unrelated to the earlier and more widely used System Support Program operating system. ... {{operating-system-stub Capability systems Operating system security ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM System/38
The System/38 is a discontinued minicomputer and midrange computer manufactured and sold by IBM. The system was announced in 1978. The System/38 has 48-bit addressing, which was unique for the time, and a novel integrated database system. It was oriented toward a multi-user system environment. At the time, the typical system handled from a dozen to several dozen terminals. Although the System/38 failed to displace the systems it was intended to replace, its architecture served as the basis of the much more successful IBM AS/400. History The System/38 was introduced on October 24, 1978 and delivered in 1980. Developed under the code-name "Pacific", it was made commercially available in August 1979. The system was designed by a number of engineers including Frank Soltis and Glenn Henry and offered a number of innovative features. The architecture shared many similarities with the design of the failed IBM Future Systems project, including the single-level store, the use of micr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |