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File- Section &Working-Storage Section:
a) FILE SECTION:
The FILE SECTION includes the explanation of all data items that must be read from or written onto some external file.
b) WORKING-STORAGE SECTION:
The data items that are developed internally as intermediate result as well as the constants are explained in this section of the DATA DIVISION.
The format of the DATA DIVISION is as shown below:
DATA DIVISION.
[FILE SECTION.
File section entries.
......
......]
[WORKING-STORAGE SECTION.
WORKING-STORAGE ENTRIES.
All the section names as well as the division name should be coded as the margin A entries,
Each section of the DATA DIVISION is optional that means that a section may be omitted if there is no data which may be explained in a specific section. It is important to note that the sections to be included should appear in the order as shown above.
File Activity: The file activity is a measure of the proportion of records processed during an update run. Therefore we define the activity ration as shown below. Activi
INPUT-OUTPUT SECTION: This section holds information regarding the files to be used in the program. There are 2 paragraphs in this section- FILE-CONTROL & I-O-CONTROL. The
COBOL Words: The COBOL word can be formed by using the characters as shown below: 0-9 A-Z (a-z) - (hyphen) The rules below should be hold in forming the COBOL words.
THE SIMPLE SORT VERB: The process of sequencing the records in some preferred manner is termed as sorting. The Sorting is done upon some key data item in the record. For illus
FILE STATUS clause: This clause has been involved in the above syntax for completeness. The ORGANIZATION, REVERSE, ACCESS and STATUS clause can be specified in any order.
Example of Class condition: Let the BASIC-PAY be a data name in the card record defined with picture 9(5) V99. By reading the card we can test the value of the BASIC-PAY to ma
RULES OF RENAMES CLAUSE: The rules below should be observed while using the RENAMES clause: (i) All RENAMES entries should be written only after the last record descript
PROGRAM FOR MOVE CORRESPONDING: We have to write a simple program to demonstrate Move Corresponding. identification division. program- id. environment division.
Common form of the READ statements: Format 1 is the common form of the READ statements. Format 2 is used when the access mode is either random or dynamic. For illustration,
Selection of file Organization: While designing a file, the programmer should select an appropriate association for a file. The order in which the choice is to be made is as s
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