What is index cardinality?

Answer Posted / uday

According to what i have observed, cardinality is the number
of count of nodes in the BTree of respective index.

If you create a table with with name attribute and inserted
into 100 new names and added and index.

then if you see the cardinality, certainly it wont be 100.
it will be some thing less than 100.

thats it....

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the physical storage length of the data types: date, time, timestamp in the db2 database?

663


What is the max length of sqlca?

778


What is the difference between plan and package in db2?

585


Why do chiropractors use drop table?

676


What is the physical storage length of time data type?

683






Is the primary key a clustered index?

626


What is netezza database?

583


before altering a table is it necessary to lock ? if lock what is it ? how to do ? ifi want to lock a table what is that command ?

1722


Following a db2 update statement, what is the quickest way to compute the total number of updated rows?

632


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

726


What r the comman abends in db2, jcl and cobol???????

1828


What is the use of runstats in db2?

593


Define declaration generator (dclgen).

673


Define db2 and its databases?

634


Can we update view in db2?

568