On Mon, Apr 12, 2010 at 12:22 PM, Jonathan Rochkind <rochkind_at_jhu.edu> wrote:
> The thing is, the NoSQL stuff is pretty much just a key-value store.
> There's generally no way to "query" the store, instead you can simply look
> up a document by ID.
Actually, this depends largely on the NoSQL DBMS in question. Some
are key value stores (Redis, Tokyo Cabinet, Cassandra), some are
document-based (CouchDB, MongoDB), some are graph-based (Neo4J), so I
think blanket statements like this are somewhat misleading.
CouchDB and MongoDB (for example) have the capacity to index the
values within the document - you don't just have to look up things by
document ID.
-Ross.
Received on Mon Apr 12 2010 - 13:38:12 EDT