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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.
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
THE SIMPLE SORT VERB: The process of sequencing the records in some preferred manner is termed as sorting. The Sorting is done upon some key data item in the record. For illus
COMPOUND CONDITION: The two simple conditions can be connected by the logical operators AND or OR to form a compound condition (also termed as combined condition). When two co
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
START STATEMENT: The START statement places the files to the initial logical record whose record key satisfies the condition specified by the KEY phrase. The access mode shoul
The LENDER Bank offers mortgages on homes valued up to $500,000. The required down payment is calculated as follows: 4% of the first $60,000 borrowed 8% of the next $30,000 borro
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
Data types available in COBOL are given below Alpha-numeric (X), numeric (9), alphabetic (A)
Example of compound condition: In common, a compound condition has the form which is as shown below: Where condition-1 & condition-2 can be any one of the below:
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
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