Author: admin
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Basic Syntax
You have seen a basic structure of pascal program, so it will be easy to understand other basic building blocks of the pascal programming language. Variables A variable definition is put in a block beginning with a var keyword, followed by definitions of the variables as follows: Pascal variables are declared outside the code-body of the function…
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Program Structures
Before we study basic building blocks of the Pascal programming language, let us look a bare minimum Pascal program structure so that we can take it as a reference in upcoming chapters. Pascal Program Structure A Pascal program basically consists of the following parts − Every pascal program generally has a heading statement, a declaration…
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Environment Set Up
There are several Pascal compilers and interpreters available for general use. Among these are − We will be using Free Pascal in these tutorials. You can download Free Pascal for your operating system from the link: Download Free Pascal Installing Free Pascal on Linux The Linux distribution of Free Pascal comes in three forms − Installation…
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Overview
Pascal is a general-purpose, high-level language that was originally developed by Niklaus Wirth in the early 1970s. It was developed for teaching programming as a systematic discipline and to develop reliable and efficient programs. Pascal is Algol-based language and includes many constructs of Algol. Algol 60 is a subset of Pascal. Pascal offers several data…
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MainFrames Frequently Asked Questions
1. What is the mainframe used for? Digital mainframe computer focuses on input/output devices, including large-capacity discs and printers for high-speed data processing. Payroll calculations, accounting, corporate transactions, information retrieval, airline seat reservations, and calculations in science and engineering have all been made on mainframes. Client-server architecture has largely replaced mainframe systems, which had remote…
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VSAM
A type of data set and the access technique used to control different user data types is a virtual storage access mechanism (VSAM). VSAM offers a lot more sophisticated functions than other disc access methods as an access mechanism. Disk records are stored in VSAM in a unique format incomprehensible to other access techniques. The…
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JCL
The main operating system for IBM Mainframe systems, Multiple Virtual Storage (MVS), uses Job Control Language (JCL) as its command language. JCL notifies the Operating System using Job control Statements about the program to be performed, the inputs needed, and the input and output location. Programs can be run in batch mode or online mode…
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IMS DB
Information Management System is referred to as IMS. IMS was created in 1966 as part of the Apollo mission to send a man to the moon by IBM, Rockwell, and Caterpillar. It spearheaded the revolution in database management systems and is still developing to satisfy demands for data processing. IMS offers a user-friendly, dependable, and…
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COBOL
Common Business Oriented Language is known as COBOL. It is procedural, object-oriented, and imperative. A computer program called a compiler converts other computer programs written in high-level (source) languages into machine code, which the computer can understand. Data is input into a file or database, processed, and produced via COBOL. In a nutshell, COBOL receives data,…
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CICS
“Customer Information Control System” is what CICS® stands for. It serves as the z/OS® operating system’s general-purpose transaction processing subsystem. While many other customers request to execute the same applications using the same files and programs, CICS offers services for executing an application online upon request. CICS controls resource allocation, data integrity, and execution priority…