Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
LEVEL NUMBERS:
The COBOL makes use of the level number concept to explain the hierarchical data structure.
A level number is a 2 digit number. The permitted level numbers are 01 - 49, 66, 77 and 88.
All the variables are declared in the working-storage section by using appropriate level numbers.
The elementary data item can acquire either 01 or 77 as its level number. In the COBOL a division is made between the elementary and group data items. A few elementary data may be joint to form a group.
For illustration, the DAY, MONTH & YEAR may be 3 elementary data items. These may be joint to form a group data named DATE. The association may be shown pictorially as shown below:
It may be noted that the memory space referred to by the DATE is the combined memory space for DAY, MONTH &YEAR. The benefits of such a grouping are very clear. The programmer can now refer to the individual elementary items DAY, MONTH, YEAR or the group item DATE. An elementary data item is however the one which the programmer would always like to refer to as an entire and not in parts.
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
DATA RECORD CLAUSE: The DATA RECORD clause, documents the record names defined for the file. For illustration, DATA RECORDS ARE REC-1, REC-2, REC-3 that means there are 3diffe
Structure of a COBOL Program: Every COBOL program should have the 4 divisions in the order in which they are specified below: 1. Identification division 2. Environment D
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
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
calculate simple interest
Occurs Clause: Let us establish tables with the help of an illustration. Assume that there are ten different types of income-tax rates that are read from some input medium and
Program for Sequential File Creation & Rewriting We have to write a program to create a Length file with just two fields: l (Length) and l-c (Length-Code). Add a few records.
REDEFINES CLAUSE: At times it may be found that two or more storage regions defined in the DATA DIVISION are not in use concurrently. In such situations only one storage regio
ROUNDED OPTION: Let us consider the DATA DIVISION entries which are as shown below: Now, subsequent to the execution of the statement ADD A B GIVING C, the C will hold
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd