when we go for snow flake schema rather than star schema ?

Answer Posted / bo_fan

Star schema : fact table with dimension tables around.
Snow flake schema: fact table with dimension tables around
and the dimension tables again have sub tables to it.
Example: When we have a scenario like student table and
subject details table (which is a sub table of student table)
There we can go for snow flake schema(going more details ie
normalization)

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