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Example of File-control:
The assign clause assigns a specific physical peripheral device name to a file. The physical peripheral device are machine-dependent. We use the device names READER, TAPE, PRINTER and DISK to mean line printer, card reader, magnetic tape and magnetic disk device respectively.
An illustration of the FILE-CONTROL paragraph is shown below.
FILE-CONTROL.
SELECT CARD-DESIGN ASSIGN TO READER
SELECT PRINTER-FILE ASSIGN TO PRINTER.
This paragraph represents that there are 2 files - CARD-DESIGN & PRINTER-FILE. The file named CARD-DESIGN is a card file whereas the other is a report file to be printed on the line printer.
Illustration of Search verb: To illustrate the other use of SEARCH verb, assume we wish to search the similar tab to find the number of persons whose deposited amount is more
BLOCK CONTAINS CLAUSE: Integer -1 of the BLOCK CONTAINS clause indicates the block size either in terms of records or in terms of characters. For illustration, BLOCK CONTAINS
OCCURS CLAUSE - PROGRAM: We have to write a program to demonstrate the occurs clause. Get names of the students and show them on the screen. identification division.
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
FILE-CONTROL: The FILE-CONTROL paragraph names each and every file and identifies the first medium through file control entries. The basic format of a file control entry is gi
OPEN STATEMENT: Whenever a READ or a WRITE operation is executed on a file, then it should be open. The opening of a file may be completed with the help of the OPEN verb. With
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
Major difference between file and array how does record read from array and file why we are not preparing array for real time
UPDATING OF THE RELATIVE AND INDEXED FILES: The Sequential files are updated by creating a new master file from an existing old master file and a transaction file. Such an Upda
PROGRAMS FOR REDEFINES CLAUSE: We have to write a simple program to explain the REDEFINES clause at 01 level. identification division. program- id. Redef. environment
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