Hi!

Macarse wrote:
> 1)
> Emulating a count(*).
> I did this: http://pastebin.com/f276fd2c7 but it takes some time and
> it doesn't look like a good solution.
> Which is the best way?
>   

The code uses traversals to infinite depth, which of course comes at a 
cost even when using Neo4j (and I think this has very little in common 
with count(*) which only counts to depth one!). How many nodes are 
typically traversed by your code? How much time is spent per node in the 
traversal?

> Does the following make any sense?
> Robert connected to the place and therefore to people living there.
> (Robert <--- friend with people living in ---> Argentina; Charly <---
> lives in ---> Argentina)
>   

Makes sense to me. One detail: make sure to use directed edges where it 
fits your domain when presenting this stuff! :-)

> 3)
> Is there a way to create something similar to an schema to generate the db?
> Robert has almost 100k friends :(
>   

Then Robert has to be a very nice guy ;-)

If you have the data in a RDBMS you should take a look at the SQL 
importer being developed right now:
http://wiki.neo4j.org/content/Neo_-_SQL_importer



/anders



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