what is the logic will you implement to load data into a
fact table from n dimension tables?
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Answer Posted / vikaskrmails@gmail.com
fist of all, Fact and Dimensions are separate entity tables
because fact contains measures and PK and FK where as Dim
contains Detail data along with PK and FK.
Dimensions and fact's loaded by their different sources
first we load dimensions and simultaneously assigned it to
surrogate key by sequence or CSUM etc functions. dimension
can maintain FK for other related dimensions and facts.
after loading fact we are updating it with Dim's PK-FK by
lookup.
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