Information Density represents percentage of records that have not NULL values for a field.
Example:
| country |
code |
|---|---|
| Afghanistan | AF |
| Albania | |
| Algeria | DZ |
After loading the above records, go to the table viewer section (CTRL+T)
mouse hover on “country” field, you will see Information density is 100%
Now mouse hover on “code” field, you will see Information density is less than 100% i.e 67%
It means that, code field contains a null value in 2nd row that’s why it is showing Information density is 67%
Qlikview 