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Data Control Block

In IBM mainframe operating systems, such as OS/360, MVS, z/OS, a Data Control Block (DCB) is a description of a dataset in a program. ^[1]

21 relations: Access method, API, Application software, Assembly language, Data buffer, Data set (IBM mainframe), Disk sector, DOS/360 and successors, IBM mainframe, Input/output, Input/Output Control System, Job Control Language, Library (computing), Linker (computing), MVS, Operating system, OS/360 and successors, Record-oriented filesystem, Volume Table of Contents, VSE (operating system), Z/OS.
IBM file systems
Mainframe computer stubs

Access method

An access method is a function of a mainframe operating system that enables access to data on disk, tape or other external devices. Data Control Block and access method are IBM mainframe operating systems.

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API

An is a way for two or more computer programs or components to communicate with each other.

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Application software

An application program (software application, or application, or app for short) is a computer program designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end-users.

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Assembly language

In computer programming, assembly language (alternatively assembler language or symbolic machine code), often referred to simply as assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence between the instructions in the language and the architecture's machine code instructions.

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Data buffer

In computer science, a data buffer (or just buffer) is a region of memory used to store data temporarily while it is being moved from one place to another.

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Data set (IBM mainframe)

In the context of IBM mainframe computers in the S/360 line, a data set (IBM preferred) or dataset is a computer file having a record organization. Data Control Block and data set (IBM mainframe) are IBM mainframe operating systems.

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Disk sector

In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc.

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DOS/360 and successors

Disk Operating System/360, also DOS/360, or simply DOS, is the discontinued first member of a sequence of operating systems for IBM System/360, System/370 and later mainframes. Data Control Block and DOS/360 and successors are IBM mainframe operating systems.

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IBM mainframe

IBM mainframes are large computer systems produced by IBM since 1952.

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Input/output

In computing, input/output (I/O, i/o, or informally io or IO) is the communication between an information processing system, such as a computer, and the outside world, such as another computer system, peripherals, or a human operator.

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Input/Output Control System

Input/Output Control System (IOCS) is any of several packages on early IBM entry-level and mainframe computers that provided low level access to records on peripheral equipment. Data Control Block and Input/Output Control System are IBM mainframe operating systems.

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Job Control Language

Job Control Language (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. Data Control Block and job Control Language are IBM mainframe operating systems.

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Library (computing)

In computer science, a library is a collection of read-only resources that is leveraged during software development to implement a computer program.

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Linker (computing)

In computing, a linker or link editor is a computer system program that takes one or more object files (generated by a compiler or an assembler) and combines them into a single executable file, library file, or another "object" file.

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MVS

Multiple Virtual Storage, more commonly called MVS, is the most commonly used operating system on the System/370, System/390 and IBM Z IBM mainframe computers. Data Control Block and MVS are IBM mainframe operating systems.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

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OS/360 and successors

OS/360, officially known as IBM System/360 Operating System, is a discontinued batch processing operating system developed by IBM for their then-new System/360 mainframe computer, announced in 1964; it was influenced by the earlier IBSYS/IBJOB and Input/Output Control System (IOCS) packages for the IBM 7090/7094 and even more so by the PR155 Operating System for the IBM 1410/7010 processors. Data Control Block and OS/360 and successors are IBM mainframe operating systems.

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Record-oriented filesystem

In computer science, a record-oriented filesystem is a file system where data is stored as collections of records.

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Volume Table of Contents

In the IBM System/360Including the successors S/370 through z/Architecture storage architecture, the Volume Table of Contents (VTOC) is a data structure that provides a way of locating the data sets that reside on a particular DASD volume. Data Control Block and volume Table of Contents are IBM file systems and IBM mainframe operating systems.

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VSE (operating system)

VSEn (Virtual Storage Extended) is an operating system for IBM mainframe computers, the latest one in the DOS/360 lineage, which originated in 1965. Data Control Block and VSE (operating system) are IBM mainframe operating systems.

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Z/OS

z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. Data Control Block and Z/OS are IBM mainframe operating systems.

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References

[1] https://en.wikipedia.org/wiki/Data_Control_Block

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