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FD Entry for variable-length Records:
The RECORDS CONTAINS and BLOCK CONTAINS clause are quite dissimilar in the case of files with variable- length records. The syntax of these two clauses is as shown below:
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
SEQUENTIAL FILES WITH THE VARIABLE-LENGTH RECORDS: The Magnetic - tape or disk files can hold variable-length records. In this situation the file can have records with various
Identification Division: The Identification Division is the first division of each and every COBOL source program. The paragraph PROGRAM-ID is necessary in most of the mac
Label Records / Disk Directory: The most important information stored in the header label is what is termed as the file title. In the situation of magnetic-disk files the labe
PROCEDURE DIVISION statements for the relative files: The statements OPEN, CLOSE, READ, WRITE and REWRITE that are available for sequential files are also available for the re
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
WRITE STATEMENT: The WRITE Statement verb releases a record in an output file. The syntax for the WRITE statement can be unlike depending on the output device and the medium us
Configuration Section: This section holds an overall specification of the computer used for the purpose of the compilation and execution of the program. There are in all 3 par
ADD and SUBTRACT CORRESPONDING: The CORRESPONDING option can also used with the ADD and SUBTRACT verbs. The following are some of the formats of these verbs with the CORRESPON
PROGRAM FOR INDEXED SEQUENTIAL FILE CREATION (RANDOM MODE): We have to write a program to create an Indexed Sequential File in random mode for Student particulars. Suppose jus
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