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What is the difference b/w index and subscript?
Subscript indicates to the array occurrence whereas index is the displacement (in no of bytes) from the beginning of the array. An index can only be modified using PERFORM and SEARCH and SET.
OPEN statement: We know that the processing of a file should start with the execution of an OPEN statement. The file can be opened in any one of the 4 open modes - INPUT, OUTP
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
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
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
Plus Sign - edit characters for numeric data: + (Plus Sign) : A plus sign is alike to minus sign except that when the item is positive, +sign will be inserted rather th
Examples - Edit characters for numeric data: The following illustration illustrates the use of Z editing characters. The character b is used to indicate the space character an
LABEL RECORD CLAUSE: This clause specifies whether or not the standard header and trailer labels must be present in the magnetic-tape files. VALUE OF CLAUSE: The VAL
OCCURS CLAUSE - PROGRAM: We have to write a program to elaborate occurs clause. Get names and marks of the students and show them on the screen. identification division.
PROGRAM TO DEMONSTRATE MERGE VERB: The two files for which a record having 2 fields viz. Account Number and Name are already available. Now Merge these two files and create a
INDEXED SEQUENTIAL FILES: In the indexed sequential files which are also known as indexed files, the records are stored in the sequence order generally in ascending order. In
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