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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.
There are some restrictions when these procedures are used. (i) The Procedure should not contain any SORT/MERGE statement. (ii) An explicit transfer of the control outside
NEGATED SIMPLE CONDITION: Any of the easy condition explained can be preceded by the logical operator NOT. The consequence of placing the operator NOT before an easy condition
Illustration of indexed tables: Index items defined through the INDEXED phrase of the OCCURS clause are one type of indexes. There can be other type of index items that are de
Example of Write statement: Illustration: (i) WRITE TRANS-RECORD AFTER ADVANCING 3 LINES. This WRITE statement specified that the TRANS-RECORD is a record name of a fi
What is the difference b/w index and subscript? Subscript indicates to the array occurrence whereas index is the displacement (in no of bytes) from the beginning of the array.
PROGRAM FOR IF -ELSE: We have to write a program to check whether the given number is ODD or EVEN. You can use IF..ELSE. Identification division. Program- id. IfElse.
PERFORM WITH UNTIL OPTION: The format is as shown below: Illustration: A) Perform p-3 until i > 5. Here p-3 will be executed whenever i B) Perform p-2 thru
program
PROGRAM FOR ELECTRICITY BILL: An electricity company supplies electricity to 4 types of customers coded 1, 2, 3 & 4.The rate schedule for customers is shown in one table as
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
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