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Direct Organization:
Besides the relative or indexed organization, also a direct access file can be designed to have what is termed as direct organization. In this organization, the data records are stored or "accessed" by using a scheme of converting the record into the disk address to which the record is placed. Therefore, no index table as in the case of an indexed file is essential.
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 devic
Floating Insertion The currency symbol ($) can emerge in multiples on the left-hand side of the picture. In this situation the character will be treated in similar way as t
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
MOVE CORRESPONDING: It is frequently required to move some of the data items of one group to some other data items in the other group. If the names of the equivalent data item
RELATIONAL CONDITION: We know that a relational condition specifies a comparison between two operands and has the form. Operand-1 relational-operator operand-2
Example of condition names: The illustration below is of the use of the condition names 77 MARITAL-STATUS PIC 9 88 SINGLE VALUE IS ZERO 88 MA
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
Display control verbs in Cobol
77 level used for- It is Elementary level item. it Cannot be subdivisions of other items or cannot be qualified, or they can be subdivided themselves.
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
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