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This stage of the course concentrates mainly on program design methodologies, the use and coding of MVS JCL, and basic elements of Pascal programming language. Section 1: MVS Job Control ~ The purpose and function of Job control language ~ Many elements of JCL and the production of various programming jobs Section 2: Program Development ~ Introduction to the main elements of a program - sequence, repetition and selection ~ Data and data classes, identifiers and literals ~ Data elements, lists and arrays ~ Understanding files, records and fields ~ Record definitions, fixed and various length records ~ Program specifications and run charts ~ Stepwise refinement and pseudo-code ~ Concept of structured program design, subroutines and subprograms ~ Program production and testing, bottom up and top down Section 3: File Handling Techniques ~ Transaction and master files ~ Report, print files ~ Understanding indexed and relative files ~ Buffers and overflow areas ~ Creating report layouts, formatting data ~ Various sorting and merging algorithms ~ Importance of file protection and backup ~ Batch processing and on-line techniques ~ Operating system, volumes, directories Section 4: The Pascal Language ~ What is Pascal? ~ The basic form of a Pascal Program ~ Use of constants and variables ~ Data typing; Integer, Real, String, Character, and Boolean ~ Single and compound statements ~ Integer and Real arithmetic expressions ~ Simple input and output using Readln, Write and Writeln statements ~ Conditional constructs, If, Else and Case ~ Until, Loop constructs; Repeat-While-Do and For-Do ~ Ordinal numbers, ranges, sub-ranges and enumerated types ~ Designing and using arrays Section 5: Program Design This module concentrates entirely on program design methodologies. It shows the development stage of many program solutions using: ~ Flow Charts ~ Structure Charts ~ Pseudo-code, stepwise refinement ~ Decision tables |
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