Hi All,

I have recently started working with Solr and i have a trivial question to ask, 
as i could not find suitable answer.

A document's indexes can be defined in a config file (such as schema.xml) and 
on the fly using some solr client such as SolrJ.

1. What is the difference in indexes created by both the approaches ?
2. Is there any major performance gain in the case of using predefined index 
instead of using SolrJ ?
3. Does solr persist these indexes differently and does that has any impact on 
the Query efficiency ?

Thanks
Sumit Purohit

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