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What is a cursor?
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Answer / guest
A cursor is a programming device that is used to handle the
rows that are returned by the query as the host language
(cobol) can handle only one row at a time. its also a small
file that has the result set. The cursor has to be
declared,opened, fetched and closed to access the data
returnee by the query.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / vinod babu bachina
In DB2 cursor is used to fetch more than one row from a DB2
table. But cursor can fetch only one row at a time. Suppose
if ur retrieving more than one row from table , u have to
use cursor only. If u use SELECT instead of cursor then it
leads to error '' more than one row selected in select'.
| Is This Answer Correct ? | 1 Yes | 0 No |
Mention a credible reason why select* is never given preference in an sql program that has been embedded.
In a Cobol-DB2 program, I am fetching rows from 4 tables using cursor and then based on the a field present in that table, It processes the information accordingly..for example stat-c is one digit field..if stat-c is 'D' then the a row is deleted from table and written those details in to a file. If the stat-c is 'U' then a row is updated (hardcoded what to update)in a table and written those details in to a file. If the stat-c is 'I' then a row is inserted in a table and written those details in to two files. The issue is i have to include the intermediate commits. When an abend occurs, due to commit statement db2 tables will be saved, But there will be lose of file contents. When we resubmitting the job associated with this program there will be insert ,update and delete anomolies to avoid that what measures could be taken?. The intermediate commit is nothing but issuing commit after massive inserts, updates and deletes(sum of 500actions)
Hi, i would like to start a new carrier in DB2 DBA.Which and what all step should i have to take..?
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COBOL 
