How does DB2 use multiple table indexes?

Answer Posted / s

DB2 uses multiple index processing by using the technique
called list prefetch. The qualifying RIDS from all the
indexes in placed in the RID Pool, sorted and duplicate
RIDS are eliminated based on the page number and List
prefetch I/O issued to read the data pages in DASD
sequence.

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to retrieve rows from a db2 table in embedded sql?

995


What is the difference between drop table and delete table?

795


What are bind parameters in db2?

803


what is the sqlcode -501

12125


What is a bind card?

897


How do you eliminate duplicate values in db2?

902


What is with ur in db2?

1026


What is the use of with ur in db2?

807


Hi Everyone... Under the Logical files, when am working on multiple rec format logical file, I have joined two pf's using the multiple record format logical file concept, but when i run queried the LF only the first mentioned pf records are reflecting and I am not able to see any of the field records specified under the second pf. Kindly let me know whats the reason behind this. Below is the str of LF., R rec PFILE(LOGICAA) CUSTNO CUSTNAME BILL K CUSTNO R rec1 PFILE(LOGICAA1) CUSTNO ADD K CUSTNO .....

2119


i tried to copy some records from microsoft excel to as-400 physical file through "Bosanova" emulation. Out of 14000 records only 12000 records copies and subsequently programe started to hang. Then, i closed the program forcefully. I did' under stand the problem. Also when i try to compile the physical file it is showing as "The file in use". How to overcome this problem?

2291


Is db2 a programming language?

795


What is the difference between "db2ilist" and "db2 get instance" commands in DB2 Database Server?

989


What are the prerogatives?

805


What are the benefits of using the db2 database?

891


How would the varchar column remarks defined?

850