Forum Discussion
Many to many crossfiltering none
- Anonymous7 years ago
MiKeZZa By linking multiple fact tables to the same Date Dimension, you can do exactly what you have described.
What you will end up is not really a star schema, but conceptually each FACT table is still a star schema. Its not really a snowflake schema either as you can't cascading outwards. I personally refer to it as a sandwich schema, because i put the Dimension tables on the outside (bread) and the fact tables in the centre (meat). I'm sure someone has a more technical name.
From here you can easily place non-related data on common axis and show results.
MiKeZZa By linking multiple fact tables to the same Date Dimension, you can do exactly what you have described.
What you will end up is not really a star schema, but conceptually each FACT table is still a star schema. Its not really a snowflake schema either as you can't cascading outwards. I personally refer to it as a sandwich schema, because i put the Dimension tables on the outside (bread) and the fact tables in the centre (meat). I'm sure someone has a more technical name.
From here you can easily place non-related data on common axis and show results.
Yes; you are alright. The solution is not in making a complex full join, but by just don't making a relation between the facts, but only between fact-dim. That's clear. Been there, done that, but haven't realised it when the current situation changed (were already was a full join).