top down vs bottom up
top down vs bottom up
(OP)
Could someone explain to me the difference between top down and bottom up data warehousing approaches?
are star schemas bottom up where as data cubes are top down?
any help would be appriciated
are star schemas bottom up where as data cubes are top down?
any help would be appriciated
RE: top down vs bottom up
In my experience top down is faster initially because you can quickly meet the needs of the orginization, but typically forces a design that may not be as flexible making expanding the capabilities of the solution more difficult.
It is an easy trap to get caught up in. My experience leads me to believe you get forced in a top down method when people do not understand the technology or methodology and are unwilling or unable to learn.
I find myself quickly going from a bottom up to Top down environment yet again.
RE: top down vs bottom up
by this do you mean that regardless to the architecture (data cube/ start schema) each have related top down and bottom up methodologies?
RE: top down vs bottom up
RE: top down vs bottom up
RE: top down vs bottom up
RE: top down vs bottom up
My point is that I am trying to write a document which describes the difference between top down and bottom up techniques, and am unsure weather to label cubes as top down and stars as bottom up..