Example of level numbers - cobol programming, COBOL Programming

Example of Level numbers - cobol programming:

To explain the hierarchical structure introduced above, the concept of the level number is employed in COBOL.

The most broad group should have the level number 01. The initial subdivisions can have any level number between 02 and 49. More subdivisions must follow the similar range with the restriction that an item cannot have a level number less than or equal to the level numbers of the group which may include it. However a group involves all the elementary data or smaller groups beneath it until a level number equal to or less than the level number of the said group is encountered. The illustrations reveal the concept of the level numbers.

1936_Example of Level numbers.png

The group DATE that was shown former in the pictorial form is described in the first illustration. In the second illustration PAY is the most comprehensive group that has three subdivisions, namely, the GROSS-PAY, DEDUCTIONS &NET-PAY. The GROSS-PAY is again subdivided into BASIC, DEARNESS & HOUSE-RENT. In similar way the deductions are further subdivided into the PF-DEDUCT and IT-DEDUCT. It may be noted that the elementary data items are BASIC, DEARNESS, HOUSE-RENT, PF-DEDUCT, and IT-DEDUCT & NET-PAY. The structure can be pictorially shown below: 

410_Example of Level numbers1.png

Many times, in a hierarchical data structure like this, the programmer may not need a data item to be referred to in the PROCEDURE DIVISION. This situation usually arises when a group and only few of its subdivisions are to be used in the program. The remaining subdivisions do not require to be used explicitly. In such cases the word FILLER may be used to name data to which the programmer does not wish to assign a specific name. FILLER can be used as many times as needed.

Posted Date: 10/16/2012 4:23:37 AM | Location : United States







Related Discussions:- Example of level numbers - cobol programming, Assignment Help, Ask Question on Example of level numbers - cobol programming, Get Answer, Expert's Help, Example of level numbers - cobol programming Discussions

Write discussion on Example of level numbers - cobol programming
Your posts are moderated
Related Questions
Example of File-control: The assign clause assigns a specific physical peripheral device name to a file. The physical peripheral device are machine-dependent. We use the devic

READ STATEMENTS: The common format for the read statements is as shown bellow. Format 1: READ file-name RECORD [ INTO   identifier ] [  ;  AT   END     imperative-s

Example of Redefines clause: This illustration describes a sales record that may either contain the total amount of sale or the quantity (QTY) and UNIT-PRICE. The aim of such

Example of compound condition: In common, a compound condition has the form which is as shown below: Where condition-1 & condition-2 can be any one of the below:

Illustration of simple sort verb: Illustration: Suppose that we have a card file with the following records description in the data division. The names of the work fil

Rules of read statements: The next record is identified according to the rules as shown below: (i) Whenever the READ NEXT statement is the initial statement to be executed

PERFORM STATEMENT:   The PERFORM statement can be used to execute the group of consecutive statements written elsewhere in the program. We refer to this group of statements a

LABEL RECORD CLAUSE: This clause specifies whether or not the standard header and trailer labels must be present in the magnetic-tape files. VALUE OF CLAUSE: The VAL

Example of condition names: The illustration below is of the use of the condition names  77  MARITAL-STATUS     PIC    9   88  SINGLE    VALUE    IS     ZERO   88  MA

STATEMENTS FOR SEQUENTIAL FILES: A basic operation on a file includes the reading and writing of its records. Whenever the file is sequential, there are three verbs for the