Create a DW incl. starschema

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I have 2 .BAK files and I want from that to create a small DW that I build in the new database including a star schema.

I have tried to restore the 2 bak files inside MSSM, and then it created two database.

Im confused if I have done it right or what next steps is it?

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No, It's just two versions of a single database.

For the DW Star Schema, you should have one fact table in the centre of the star and a number of associated dimension tables.

Read More :

Star and SnowFlake Schema in Data Warehousing

Create a Star Schema Data Model in SQL Server using the Microsoft Toolset