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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 above statement. The foremost time the READ statement is executed, and then the first record of the file will be read into the record region explained in the FILE SECTION of the DATA DIVISION. The later time the READ statement is executed, the second record will be read in the similar region. In this way each time a READ statement is executed the successive records will be read in the similar region. Hence a time will come when there will be no more records in the file. In that situation the statements following the AT END clause will be executed. The format of the READ statement is shown below:
READ file-name RECORD [INTO identifier-1]
AT END imperative-statement
RULES OF MOVE VERB: The Data movement is managed by the rules which are as shown below: (a) The contents of the identifier - 1 or the value of the literal - 1 is moved to
DELETE STATEMENT: The format of the delete statement is as shown below: DELETE file-name RECORD [ ; INVALID KEY imperative-statement ] Whenever the ACCESS MOD
SIMPLE MERGE VERB: Like sorting, the merging of files is often required in different commercial application. It is likely to merge two or more files with the help of one MERGE
PROGRAM TO FIND INTEREST ON BANK DEPOSITS: We have to write a program to find interest on deposits. The criteria is given below : identification division. program-
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.
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
Record Description for the Variable-length Records: When the variable- length records consists of records of various lengths, each record type is to be explained at level 01 f
FILE STATUS clause: This clause has been involved in the above syntax for completeness. The ORGANIZATION, REVERSE, ACCESS and STATUS clause can be specified in any order.
COMPOUND CONDITION: The two simple conditions can be connected by the logical operators AND or OR to form a compound condition (also termed as combined condition). When two co
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
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