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Picture Clause:
The picture clause explains the general characteristics of an elementary data item.
These characteristics are elaborated below:
Class:
In COBOL the data item may be one of the 3 classes - numeric, alphabetic or alphanumeric. The numeric items consist only of digits 0 to 9. The Alphabetic items consist only of the letters A to Z (a to z) and the space (blank) character. The alphanumeric may consist of alphabets, digits as well as the special characters.
we have input file ,record layout is EMP ID (6 char) , EMP NAME (20 char), Designation (3 char),Salary (5 digit) Base Branch (10char) Grade (3 Alphanumeric). This is the input file
RULES FOR INDEXED TABLES: The rules of indexing a table with an INDEXED phrase are as shown below: (1) If indexing is completed for any one level of a table, then indexing
START STATEMENT: The START statement places the files to the initial logical record whose record key satisfies the condition specified by the KEY phrase. The access mode shoul
File Description for the Relative and Indexed Files: The FD entry for a relative or an indexed file is similar to that of a sequential file. Some compilers do not permit varia
WRITE Statement: The WRITE statement for a relative file has the format which is as shown below. WRITE record-name [ FORM identifier ]
We have input file, record layout is EMP ID (6 char) , EMP NAME (20 char), Designation (3 char),Salary (5 digit) Base Branch (10char) Grade (3 Alphanumeric). This is the input f
Example of If- else statement Illustration: IF QUANTITY IS NUMERIC AND QUANTITY IS POSITIVE MOVE ZERO TO ERROR-CODE. COMPUTE SALES VALUE=QUANTITY*RATE
Illustration of perform statement: PERFORM CALCUALTE-TAX. In this illustration, the CALCULATE-TAX is either a section name or paragraph name. Assume that it is a section
Point Location: The position of the decimal point is the other characteristic which can be specified in the case of the numeric data items. If the position is not specified, t
Record Description for the Variable-length Records: When the variable- length records consists of records of various lengths, each record type is to be explained at level 01 f
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