Dimension Table Verbosity - Theory verses Prictice
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Dimension Table Verbosity - Theory verses Prictice
Per Kimball "Attributes should consist of real words rather than crptic abbrevistions." and "We strive to minimize the user of codes in our dimension tables by replacing them with more verbose textual attributes." The question is IN PRRACTICE, do you typically use "Yes", "No" for values in a boolean field like Is_Work_Day, or do you spell out the data as in "Workday" or "No Work"?
Glenn- Posts : 4
Join date : 2010-07-19
Re: Dimension Table Verbosity - Theory verses Prictice
Both.
Flags and codes are useful internally for ETL processing and query filtering, but end users should be presented with meaningful labels. Wither yes/no or workday/not workday depends on what the users want.
Flags and codes are useful internally for ETL processing and query filtering, but end users should be presented with meaningful labels. Wither yes/no or workday/not workday depends on what the users want.
Re: Dimension Table Verbosity - Theory verses Prictice
I have used Y/N or 1/0 for these type columns.
BoxesAndLines- Posts : 1212
Join date : 2009-02-03
Location : USA
Re: Dimension Table Verbosity - Theory verses Prictice
OK, I think what we'll do is use the non-verbose data during the early stages of the ETL process, then present the user with the more verbose data in views. That will make it easier for us (the developers), and give the user what they want.
Glenn- Posts : 4
Join date : 2010-07-19
Re: Dimension Table Verbosity - Theory verses Prictice
I am beginning to use "Work Day" and "Non Work Day" as well as using a field called "Work Day Indicator" that is Y/N. I like using the indicator when writing code but the Text looks better in Reports and Cubes.
Jeff Smith- Posts : 471
Join date : 2009-02-03

» Joining Type II Dimension Hierarchy directly to Fact versus through a Dimension table
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» joining dimension table to dimension and again fact table
» Can a dimension table directly link to another dimension table?
» Large Dimension table compared to fact table?
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