Dimentionality of a model
How is the dimension determined for a model? Here is a high level description and issue i am facing.
Module (1) I have a list of entries considered the column looks like this (let's say 10 columns)
The cell count is 66,807,426
And Let's say column E is the project id
which could be mapped with so many other project-detailed dimensions.
(Industry of the project, status of the project, location of the project). Let's call them KLMNO
Module (2) a summary of the above data but now i am joining the detailed dimensions (KLMNO) to this module. However the cells are exploing.
For example if K is a list of 10. The number of cells is increased by 10 fold. But in a normal excel settings, It's just adding one column to the calculations (and the cells should only increased by the number of rows)
May i know how to understand this? Thank you.