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Hello i need some important rules (circulal references etc..) to use generally to import a relational database to a non relational Database like QlikView.
Thanks
Marco
A star or maybe a snowflake schema is generally recommended for QlikView.
Search for star schema on this forum or the general web and you'll get loads of hits.
you have a lot of interesting post to read
Data Modelling: Clarity vs. Speed
and the first links in Marcus_Sommer doc
As regards rules to generate a DataWhareHouse model, are there any constrains related to Synthetic keys and intra Synthetic keys elements Generated?
Thanks
First of all, you can find the synthetic keys in any Qlik model that has more than one table (star, snowflake, relational).
IMHO there are no constraints: you can keep your synthetic keys or you can remove the synthetic keys; if the model is correct, it works with the keys and without them.
Personally I usually remove the syn keys and I suggest to people starting with Qlik to remove them: in this way the associations between tables are always set by Qlik developer.
Another reason to remove syn keys is they make harder to understand the Qlik model (using the table viewer), above all when there are a lot of syn keys.
If you have time (a lot of time) read this
Hello, i need to know if this model that i have created is considerable star-schema like or some adjustment must be made (the dimensions table can be connected?).
Thanks
Marco
Hi Marco,
that would be considered a 'snowflake', should be fine
HTH - Andy
Ha - looked a bit closer = STAR SCHEMA!
Hi Marco,
This model is fine, I feel its a START schema
Notice that the dimension tables are connected.
Marco