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DELETE STATEMENT:
The format of the delete statement is as shown below:
DELETE file-name RECORD [ ; INVALID KEY imperative-statement ]
Whenever the ACCESS MODE IS SEQUENTIAL the execution of the DELETE statement should be preceded by the execution of a READ statement on the file and the INVALID KEY phrase must not be specified.
calculate simple interest
ON SIZE ERROR OPTION: If after an arithmetic expression, the result exceeds the highest value which can be accommodated in the result; this error is termed as size error. T
we have input file ,record layout is EMP ID (6 char) , EMP NAME (20 char), Designation (3 char),Salary (5 digit) Base Branch (10char) Grade (3 Alphanumeric). This is the input file
ARITHMETIC VERBS: Most of the problems need some computations to be performed on the input or intermediate data that are numeric in nature. The Arithmetic verbs are used to pe
Rules of read statements: The next record is identified according to the rules as shown below: (i) Whenever the READ NEXT statement is the initial statement to be executed
Numeric - Literals : The numeric literal can be created with the help of digits only. It can have a sign (+ or -) and can also have a decimal point. If no sign is specifi
Sign - Picture clause: The numeric data item can be signed or unsigned. If a numeric data is regarded as unsigned then during the execution these unsigned data items are treat
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
Example of If- else statement Illustration: IF QUANTITY IS NUMERIC AND QUANTITY IS POSITIVE MOVE ZERO TO ERROR-CODE. COMPUTE SALES VALUE=QUANTITY*RATE
BLANK WHEN ZERO: BLANK WHEN ZERO is an editing clause that may be used along with a picture. This will set the whole data item to blanks of its value is equal to zero. Though,
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