Interested to Buy Any Domain ? << Click Here >> for more details...
Types Of Read , FIND
- 2 Answers
- 8630 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
FIND- to access one or multiple records using search
criteria .The FIND statement has several forms. The
essential ones are as follows:
• FIND
• FIND NUMBER
FIND and FIND NUMBER are completely different - FIND
retrieves data whereas FIND NUMBER queries the database.
A FIND statement has a processing loop associated with it.
READ- to access one or multiple records with different
keys even if elements of the key are unknown. It has
multiple forms as described below:
READ PHYSICAL - when all or most of the records in the file
are to be presented
(most efficient) when the sequence of records is not
important
when there is no risk of increasing record size during
update
READ BY ISN - when some or all of the records in the file
are to be presented
when the sequence of records is not important (or ISN
sequence is required)
when there is a risk of increasing record size during update
READ LOGICAL - when some or all of the records in the file
are to be presented
(least efficient) when only records within a specific key
range are to be presented
when the sequence of records presented is important
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / guest
Read has the following types:
Read logical, Read physical and Reas by ISN
| Is This Answer Correct ? | 0 Yes | 2 No |
how we can find occurence of MU and PE fileds in a file?
Explain difference between read(1) and read work file once?
Is it possible to declare a GDA for an external subroutine?
What happens when you issue a ESCAPE ROUTINE in a program ? Will there be any compilation /Run time error.
A field declared as P8 needs to be redefined as Alphanumeric. What would be its new size?
What is cobol coding sheet?
what type of files we can process thru file-aid
What is the difference between read work file 1 and read work file once? Why we are using work file once?
How can I create 1 DDM that fetches 3 ADABAS files simultaneously?
How to create 1 ddm that fetches 3 adabas files simultaneously?
Explain how to ftp the natural program to desktop? (From mainframe to pc), is it possible?
What is the difference between External subroutine and subprogram?
COBOL 
