[Tagdb] Tags and data storage

[Erik Hatcher]

On Mar 24, 2006, at 1:17 PM, Nitin Borwankar wrote:
> Not sure what is meant by "tags don't map to sql"
> A tag is an attribute so that is pretty well handled by SQL.
> If what is meant is that the tag calculus is not supported  
> efficiently by SQL *built in* predicates and functions
> then I might agree.
>
> Google's < a href="http://labs.google.com/papers/mapreduce- 
> osdi04.pdf">map reduce </a>  may be useful here


Or if you can't get enough of the "Lucene" brand, how 'bout the open  
source version:

	<http://lucene.apache.org/hadoop/>

This is perhaps on the extreme end of folksonomy infrastructure and  
to be honest I've never given thought to how MapReduce/Hadoop could  
factor into my situation because it is so much more complex than I  
have time to digest fully or to prototype with.  But, others should  
trail blaze in this arena - I fully expect there to be some pretty  
special things that can be done here.

> Also what exactly is "partial indexing".

Good question.  Perhaps it means that the data is stored in a  
relational database in a normalized granular fashion, but indexed  
into something like Lucene also for more sophisticated, faster, and  
scalable querying.

It's a shame the underpinnings of del.icio.us are obscure, though I  
can appreciate why that is as well.

	Erik