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Selection of file Organization:
While designing a file, the programmer should select an appropriate association for a file. The order in which the choice is to be made is as shown below:
(i) Implementation support difficulty.
(ii) Software support required.
(iii) Efficiency of processing.
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
Illustration of Perform with varying option: A) Perform para-3 varying the k from 1 by 1 until k > 10. Here para-3 will be constantly executed 10 times (For k=1,2,3, .....1
Group Item as Operand in the Relational Condition: Whenever an operand of a relational condition is the group item, the item is then considered to be an alphanumeric field. Th
MULTIPLY VERB: The Multiply Verb causes one or more multiplicands to be multiplied by the multiplier and to store the products. The form of the MULTIPLY verb is as shown be
IF STATEMENT: The easiest form of the IF statement is IF condition-1 statement-1 where the condition-1 may be any one from the shown below. When the condition-1
Comparison of Nonnumeric Operands: A nonnumeric operand can be compared to the other nonnumeric operand according to the rules as shown below: (i) Fields of Equal Sizes:
PROGRAM TO DEMONSTRATE SORT VERB: The file for which a record having 2 fields, viz., Account Number and Name is already available. Sort the file based on the ascending order o
WRITE statement: The WRITE statement for tape and sequential-disk files has the syntax shown below. WRITE record-name [ FROM identifier ] As a resu
RELATIONAL CONDITION: We know that a relational condition specifies a comparison between two operands and has the form. Operand-1 relational-operator operand-2
SEARCH VERB: The SEARCH verb is used to position elements in one-dimensional tables. Let us consider the following problem. Assume that each element of a table consists of thr
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