title: Do you need Solr/Lucene for MongoDB, CouchDB and Cassandra?
body: <p>If you have RDBMS you probably have to use Solr to index your relational tables to fully nested documents.</p>
  
  <p>Im new to non-sql databases like Mongodb, CouchDB and Cassandra, but it seems to me that the data you save is already in that document structure like the documents saved in Solr/Lucene.</p>
  
  <p>Does this mean that you don't have to use Solr/Lucene when using these databases?</p>
  
  <p>Is it already indexed so that you can do full-text search?</p>