Saturday 5 September 2015

IBM MAIN FRAMES


                                     MAINFRAMES



INTRODUCTION:-
  • Mainframe was designed by IBM in early 1950's.
  • Mainframe is a server/ a large computer
  • It was designed mainly to meet the business requirements. Almost 70% of the business applications are currently running on mainframe platform.
FEATURES:-

  • Speed is high  for processing nearly 80 MIBS
  • Low maintenance
  • It can store large amount of data
APPLICATIONS:-
  • Airlines
  • banking
  • railways
  • telecom
  • stock market
SKILLS REQUIRED TO LEARN MAIN FRAMES:

  • COBOL
  • JCL
  • VSAM
  • DB2
  • CICS

COBOL:-

HISTORY:-

  •   COBOL (Common Business Oriented Language) was developed in the  year  1959.But at the time there was no compiler available.
  • COBOL  was developed by the team CONFERENCE ON DATA SYSTEM LANGUAGE (CODASYL)
  • So the CODASYL team has met  ANSI  to develop COBOL  compiler. Then COBOL has a compiler in the year 1968.
  • ANSI was released 1st version VS-COBOL-I  in the year 1974
  • the second version was released in 1985

FEATURES:-

  • It lools like a english language/HLL
  • Store the large amount of data
  • It is an independent  (it can in any other OS)
  • It is a case insensitive
  • It is a structured language
         

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