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Direct Organization:
Besides the relative or indexed organization, also a direct access file can be designed to have what is termed as direct organization. In this organization, the data records are stored or "accessed" by using a scheme of converting the record into the disk address to which the record is placed. Therefore, no index table as in the case of an indexed file is essential.
File volatility: File volatility associates to the number of times the updating of records are needed during some time period. File interrogation: Some files hold re
FILLER CLAUSE: Consider the statements as shown below: 1) 01 f pic x(80) value all "-". This statement origins a line of 80 characters filled with "-"
Name the divisions in a COBOL program are given below DENTIFICATION DIVISION DATA DIVISION ENVIRONMENT DIVISION PROCEDURE DIVISION.
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
Example of Perform statement: PERFORM BEGIN-CALCULATION THRU END-CALCULATION. Assume, BEGIN-CALCULATION and END-CALCULTION is paragraph names. The execution of the PERFORM
READ STATEMENT: The aim of this verb is to make available the next logical record from the input file. It is important to note the meaning of the "next" logical record in the
Example of Accept statement: For illustration, ACCEPT FLAG-A can be specified to read the value of the FLAG_A from the console. It may be keep in mind that no file definition
RELATIVE FILES: The Files that are stored on a direct access storage medium like magnetic disk are frequently known as direct access files. The COBOL supports three different
CLOSE STATEMENT: When the processing of a file is completed, then the file may be closed. This is completed with the help of the CLOSE-verb. The form of the CLOSE statement is
PROGRAM FOR PERFORM ...UNTIL We have to write a program to find the sum of "n" natural numbers. Identification division. Program- id. PerfUntil. Environment division.
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