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RULES OF RENAMES CLAUSE:
The rules below should be observed while using the RENAMES clause:
(i) All RENAMES entries should be written only after the last record description entry.
(ii) The RENAMES clause should be used only with the special level number 66. The level number starts in margin A or any place after it. The Data-name-1 should start from margin B or any position after it. There should be at least one space between the level number and data-name-1.
(iii) The Data-name-2 and data-name-3 can be the names of an elementary items or group items. They, though, cannot be items of the level 01, 66, 77 or 88.
(iv) The Data-name-1 might not be used as the qualifier. It can be qualified only by the name of the record within which it is defined.
(v) Neither data-name-2 nor the data-name-3 can have an OCCURS clause in its neither description entry, nor can they be subordinate to an item which has an OCCURS clause in its data description entry.
(vi) The Data-name-3, if mentioned, should follow data-name-2, in the record and should not be one of its subfields.
.(Period or Decimal Point) : The period may be used to insert a decimal point and may not come into view more than once. Both the period and V cannot appear in similar picture
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
PROCEDURE DIVISION statements for the relative files: The statements OPEN, CLOSE, READ, WRITE and REWRITE that are available for sequential files are also available for the re
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
PERFORM WITH VARYING OPTION: The format is as shown below:
cobol program for generate a eb bill
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
CLASS CONDITION: The class condition establishes whether or not the value of the operand is numeric or alphabetic. The operand is numeric if it contains only the digits 0 t
PROGRAM FOR MASTER FILE MAINTENANCE: We have to write a program to keep the stu-file for which a record has just 2 fields,viz., rno(Roll Number) and name(Student Name). Give t
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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