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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.
Illustration of Renames clause: In the illustration, PAT-OTHER-THAN-BASIC will become a fresh group consisting of DEARNESS-ALLOWANCE, HOUSE-RENT & MTHLY-INCENTIVE. Keep in min
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
CLOSE STATEMENT: When the processing of a file is completed, then the file may be closed. This is completed with the help of the CLOSE-verb. The form of the CLOSE statement is
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 simila
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
Example of Nested if statement: Illustration: Consider the following sentence The nested IF sentence holds two IFs and one ELSE. The IF-ELSE couple has been marke
We have input file, record layout is EMP ID (6 char) , EMP NAME (20 char), Designation (3 char),Salary (5 digit) Base Branch (10char) Grade (3 Alphanumeric). This is the input f
what does it used
Concept of a two-dimensional table: Concept of a two-dimensional table can be easily extended to tables having three or more dimensions. The Handling of tables up to three dim
MULTI-DIMENSIONAL TABLES: The type of table which has been considered above is known as one-dimensional table. Whenever a table is such that each of its elements in turn is a
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