4. MATERIALES Y MÉTODOS
4.3. Fase de laboratorio
SeeAmerican Standard Code for Information Interchange.
ASCII COBOL
The COBOL programming language used to write programs for the OS 2200 ASCII COBOL compiler (ACOB). ASCII COBOL conforms to American National Standards Institute (ANSI-1974) standards. Symbolic elements written in the COBOL language, then compiled by the ASCII COBOL compiler, produce relocatable elements that use the ASCII character code set.
Glossary
C
CCITT
SeeConsultative Committee for International Telegraph and Telephone.
checkpoint marker
Coding used to indicate error recovery restart points in case of failure during data transmission. In an OSI environment, this is known as a serial point synchronization number.
CMS 1100
SeeCommunications Management System software.
collect
To use the OS 2200 collector (MAP processor) to process relocatable elements and produce absolute elements.Collectandmapare used synonymously in OS 2200 documentation.
collector
The OS 2200 MAP processor, which processes relocatable elements and produces absolute elements. The collector is a component of the OS 2200 system control software.
Communications Management System software (CMS 1100)
An OS 2200 software product that provides communications and network capabilities from an OS 2200 system to a network or to local terminals and devices on the system.
configuration
The arrangement of a computer system or network as defined by the nature, number, and the chief characteristics of its functional units. The term may refer to a hardware or a software configuration. This can also refer to the devices and programs that make up a system, subsystem, or network.
Consultative Committee for International Telegraph and Telephone (CCITT)
An international advisory committee that proposes worldwide communications standards.
D
DCA
Seedistributed communications architecture.
DCP
Seedistributed communications processor.
DDN
Glossary
DDN 1100
SeeTCP/IP Application Services (TAS).
DDP
Seedistributed data processing.
DDP-PPC
SeeDistributed Data Processing Program-to-Program Communications software.
DDP-PPC application
A user-written program that uses DDP-PPC.
defense data network (DDN)
An X.25 public data network (PDN) that allows communication with other hosts using the transmission control protocol/internet protocol (TCP/IP). Originally defined for the data network of the United States Department of Defense.
Distributed Communications Architecture (DCA)
The proprietary architecture for Unisys computer systems; the Unisys network
architecture that draws together all aspects of the communications products by defining a set of logical concepts and rules (protocols and interfaces). These guidelines are used in the design of hardware, software, and network products.
distributed communications processor (DCP)
A programmable communications processor hardware unit that executes Telcon and DCP operating system (DCP/OS) software and serves as a communications subsystem that provides connections between hosts in a network; a modular communications processor that can be tailored to the needs of a broad range of users who implement Unisys
distributed communications architecture. It performs the network management function, rather than the host.
distributed data processing (DDP)
The capability for users at one computer system to execute programs and access files on other computer systems that are connected in the same network.
Distributed Data Processing Program-to-Program Communications (DDP-PPC) software
The OS 2200 software product that provides distributed data processing services for OS 2200 systems. It is the base product required on any OS 2200 system to execute any other OS 2200 software product that provides distributed data processing capability.
domain name
A descriptive, easy-to-use identifier that specifies the logical internet name of the local or remote domain.
Glossary
E
element
Part of an OS 2200 program file that can be referenced by a unique name and type. There are four element types: symbolic, relocatable, absolute, and omnibus.
error code
A number that identifies a particular type of program error. The meanings of DDP-PPC error codes are in theDistributed Data Processing (DDP-PPC/DDP-FJT) Messages Reference Manual.
H
heterogeneous network
A network comprised of hosts using different operating systems; in this case, both OS 2200 and non-OS 2200 hosts.
homogeneous network
A network comprised of hosts using different operating systems; in this case, OS 2200 systems.
host
A computer system, personal computer, or work station connected to a data transmission facility (a data transmission network in the case of DDP-PPC) that executes application or system programs on behalf of its users.
host-id
The identifier for a local or remote host in the network, defined in the CMS configuration and specified in internet physical address format or in logical host name format.
I
interface
(1) A facility provided by a software product to enable a computer user or program to use the product or exchange input and output with the product. (2) A hardware component that links two other hardware components; a portion of a hardware component where it links to another hardware component.
International Standards Organization (ISO)
The organization that established international standards for computer network architecture. ISO developed the OSI Reference Model, a seven-layered model for communications processing.
internet
Glossary
internet physical address
A host-id specified in a format that consists of a network number, a host number, and an interface message processor number, each separated by a hyphen or period. Often associated with a logical host name for ease of use.
internet protocol (IP)
One element of transmission control protocol/internet protocol (TCP/IP). Internet protocol (IP) is the standard used for sending the basic unit of data (an IP datagram) through a Defense Data Network (DDN) internet.See alsotransmission control protocol/internet protocol (TCP/IP).
ISO
SeeInternational Standards Organization.
L
LAN
Seelocal area network.
Linking System (link)
A component of the Universal Compiling System (UCS) that links separately compiled routines (object modules) so that they can execute as one program. The Linking System software also permits object modules to be executed in the UCS environment.
local area network (LAN)
A group of interconnected workstations and supporting devices with high-speed,
short-range communications capability within the group. A Unisys USERNET2system is an example of a local area network. A local area network can be part of a DDP-PPC network.
local host
The host to which you are physically attached.
logical host name
A descriptive, easy-to-use host-id that is associated with, and translates to, an internet physical address. For example, three hosts at a site in New York could be given the logical host names of NY01, NY02, and NY03.
Glossary
map
(1) To transform a particular computer system’s file structure and attributes to or from a common format, called a virtual file. This enables a computer system that has an OSI software product to send all or part of a file to another computer system that has an OSI software product. The receiving computer system can then manipulate this file to conform to its own file structure and attributes. (2) To use the OS 2200 collector (MAP processor) to process relocatable elements and produce absolute elements.Mapandcollectare used synonymously in OS 2200 documentation.
N
network
Two or more independent computers (hosts) that are logically or geographically separated and electronically linked by communications lines or data communications devices for the purpose of exchanging information.
network definition statement (NDS)
A formatted statement that names and defines a network entity for CMS 1100 or Telcon. CMS 1100 NDS and Telcon NDS formats are different. In older manuals, an NDS may be called a system configuration statement (SCS).
O
object module element
An element containing part of a program in a form that is combined with other object module elements to produce an executable program (output object module element). An object module element is the output of a language processor and the input to a collection or linkage process.
omnibus
An element type for an OS 2200 program file. Programmers specify an omnibus element type when absolute, relocatable, or symbolic is not appropriate.
OSI
SeeOpen Systems Interconnection.
Open Systems Interconnection (OSI)
A network architecture developed by the International Standards Organization (ISO) and other standards organizations that enables computers made by different companies to communicate with each other.
Glossary
P
packet switching
A data conversion routine usually used in public data networks to split a message into uniformly sized packets for transmission and restored at the destination to its original form.
PDN
Seepublic data network.
protocol
A set of rules which controls network communication by defining the structure, content, sequencing procedures, and error detection and recovery techniques for data transmission.
public data network (PDN)
A network of line connections to various points furnished by a regulated carrier such as a telephone company. A communication network developed for the transmission of data and usually made accessible only to subscribers who share the network.
Q
qualifier
A prefix for a file name on an OS 2200 system. An asterisk (*) character separates the qualifier and the rest of the file name.
R
relocatable element
An element containing part of a program in relocatable binary form that is combined with other relocatable elements to produce an executable program (absolute element). A relocatable element is the output of a language processor and input to a collection process.
remote host
Any host in the network other than the one to which you are physically attached.
run stream (runstream)
A series of OS 2200 executive control language statements and any input, data, or programs associated with them.
Glossary
S
SDF
Seesystem data format.
session
A logical connection between two network-addressable units (termination systems, end users, and so forth) that can be activated, tailored to provide various protocols, and deactivated, as requested. The session activation request and response can determine options for the rate and concurrency of data exchange, the control of contention and error recovery, and the characteristics of the data stream. Sessions compete for network resources, such as the links within the path control network.
source host
The host that sends a file or records in any transfer operation.
symbolic element
An element type for an OS 2200 program file. A symbolic element can contain a source program or subprogram written in a programming language, directives to an OS 2200 software processor, executive control language statements, or input for a program or OS 2200 software processor. Symbolic elements contain text in system data format (SDF). Typically, OS 2200 text editors create symbolic elements.
system data format (SDF)
A sequential record format used by OS 2200 software for store data. SDF recognizes data records and control records. Data records contain the data (the text of a record, for example). Control records provide special control information about the data, such as line numbers, page, and size. Symbolic elements are assumed to use SDF.
T
TAS
SeeTCP/IP Application Services.
TCP/IP
Seetransmission control protocol/internet protocol.
TCP/IP Application Services (TAS)
TCP/IP Application Services software. An OS 2200 software product that communicates with other hosts in an X.25 public data network (PDN) or in a local area network (LAN) using the transmission control protocol/internet protocol (TCP/IP), originally defined for the data network of the United States Department of Defense (DoD). This product was previously called DDN 1100.
Glossary
Telcon
A Unisys program product that is a distributed communications operating system for implementation of distributed communications architecture (DCA). The software resides and executes in a distributed communications processor (DCP).
TIP
Transaction processing; allows the execution of transaction processing programs. These programs may be written in assembler language or in a high-level compiler language. OS 2200 TIP provides a general transaction processing capability that allows a remote terminal operator to initiate the execution of a preregistered program at the central computer site. Once in execution, the transaction program has access to the full capabilities of the OS 2200 executive system, as well as to the specialized capabilities and services of TIP.
transmission control protocol/internet protocol (TCP/IP)
Data transmission protocols originally defined for the United States Department of Defense data network.
U
UCS
SeeUniversal Compiling System.
UDLC
Seeuniversal data link control.
Universal Compiling System (UCS)
A set of OS 2200 software products that provide extended mode (virtual addressing) capability, a standardized system library, a linking system, compilers, and application development tools. UCS enables applications written in various programming languages to access the same files and databases.
Universal Compiling System COBOL (UCS COBOL)
An implementation of the COBOL programming language as defined by the X3.23 1985 American National Standard for use with the OS 2200 UCS COBOL compiler (UCOB).
universal data link control (UDLC)
The Unisys line control method for data transfer over communication lines.
user name
Glossary
X
X.25 public data network
A packet-switched public data network that conforms to Consultative Committee for International Telegraph and Telephone (CCITT) standard X.25, which defines a protocol for communication between packet-switched public data networks and devices operating in packet-switched mode.