it's highly unclear what such a "study" would present: there are too many 
variables in the model you chose, as well as other related on what db 
engine you are using. Let's say we do a "posts --> tags" model.

I can get home and present you a mockup model tested on postgresql, with 
timings on updates/writes/reads on both models (lists:reference or straight 
joins) but that's going to be valid on my machine, with my db config, my 
ram and my cpu, my model and my data cardinality (i.e. how many posts and 
how many tags).

Normalization and de-normalization have their own pros and cons (and a long 
list of books have been written), and they're related both on the "target" 
system (i.e. you need an app that just stores tags and searches through 
them or you need an app where tags gets managed too?) and on the underlying 
db technology. 

On Thursday, February 28, 2013 2:23:55 PM UTC+1, Cliff Kachinske wrote:
>
> Has anyone studied the effect on database performance when using 
> list:reference fields in a relational database?
>
> If so, could you share the data?
>
> Thanks,
> Cliff Kachinske
>

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