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Exercise

Extending the book dimension

In the video, we saw how the book dimension differed between the star and snowflake schema. The star schema's dimension table for books, dim_book_star, has been loaded and below is the snowflake schema of the book dimension.

In this exercise, you are going to extend the star schema to meet part of the snowflake schema's criteria. Specifically, you will create dim_author from the data provided in dim_book_star.

Instructions 1/2

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  • Create dim_author with a column for author.
  • Insert all the distinct authors from dim_book_star into dim_author.