Simple analysis of design Question before designing dimensions and facts

Hi I have a simple question... (I think its simple)

Suppose I have the following intermediate table with the following columns:

---------------------------------------------------------------------------
Student_Name | RollNo. Test_Date | Object-plug
--------------------------------------------------------------------------
with data such as
Kevin | 123 | 04/12/2010 | Physics

Now suppose I want to create a cube based on the above table so that I can successfully get the result of a query like

List the names of all of those students who took the test b & w 04/12/2010 on 2010-12-05 of Physics of matter

Here, what I need to know what size/levels would be u together and what would be our doing?

I think that one dimension would be time ( , but I don't know how I would like to welcome and manage duration... no idea )
would it not be wise to make each column a dimension? for example the student_nanme dimension and the details of the student attribute?

in any case the key is what bothers look me at the query, we see that we are required to 3 things the name of the student and the TestDate, subject pulled so if I do 3 columns the size I'm still not sure that I would be able to accommodate the request properly... any ideas on how to address and manage these situations

Published by: Johnacandy on December 14, 2010 09:26

Dimensions: STUDENT, TEST_DATE (role of TIME dimension) and OBJECT/CLASS.

Yet you did not mention the measures, perhaps TEST_RESULT? If this isn't the case, it's a factless fact table.

Tags: Business Intelligence

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