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DECLARATIVE and FILE STATUS Clause:
The input-output exception condition in the situation of a direct access files can be handled by a declarative procedure in a manner similar to that of sequential files.
Data Names and Identifiers: The Data name provides reference to the storage space in the memory where the real value is stored. This value takes part in the operation whene
MERGE VERB WITH OUTPUT PROCEDURE: Like the sort verb, the merge verb can also have an output procedure. The syntax of the MERGE verb is as shown below: The r
Display control verbs in Cobol
Example of add verb: (a) ADD A TO B. This illustration represents that the value of A will be added to the value of B and the result will be stored in B. The alignment of
RENAMES CLAUSE: At times re-grouping of an elementary data items in a record may be essential so that they can belong to the original as well as to the latest group. This is o
Illustration of Multiply verb: (a) MULTIPLY A BY B. In this situation the value of A & B will be multiplied and the product will be stored in B. The decimal point locatio
INDEXED TABLES: The OCCURS clause that is used to define tables can optionally have an INDEXED phrase. This phrase involves the names of data items which are to be used as sub
PROGRAM FOR CONDITION NAMES: We have to write a simple program to demonstrate Condition names usage. identification division. program- id. environment division.
FD Entry for variable-length Records: The RECORDS CONTAINS and BLOCK CONTAINS clause are quite dissimilar in the case of files with variable- length records. The syntax of the
Common form of the READ statements: Format 1 is the common form of the READ statements. Format 2 is used when the access mode is either random or dynamic. For illustration,
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