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Introduction to COBOL

COBOL => CO MMON B USINESS O RIENTED L ANGUAGE    Cobol can be referred to as: Ø     High-Level Programming language oriented tow...


COBOL => COMMON BUSINESS ORIENTED LANGUAGE

   Cobol can be referred to as:
Ø    High-Level Programming language oriented towards business applications.
Ø    A procedure oriented language. A Procedure is a module having its own functionality. A Problem may be segmented into multiple sub-functionalities. Each sub-functionality is written as a Paragraph in Procedure Division and executed in a logical sequence as mentioned.
Ø   Problem Oriented and Machine independent

History of COBOL


Ø  Developed in 1959 as standard language to meet needs of business
Ø  Committee to develop language convened by Department of Defense

ØIncluded representatives from academia, business, computer manufacturers


Standard Versions of COBOL


Ø  1960s - wide variations in COBOL compilers
Ø  1968   - first COBOL standard set by American National Standards Institute (ANSI)
Ø  1974   - second ANSI standard to make COBOL more efficient, standardized
Ø  1985   - this ANSI standard incorporated structured programming techniques

COBOL - Some Characteristics



Ø  COBOL is self-documenting
Ø  COBOL is simple
Ø  COBOL is non-proprietary (portable)
Ø COBOL is Maintainable


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