Zeros && Once

NoSQL NoSQL databases doesn’t following the relational   model , these database works well with today’s interactive development sprints and with cloud computing.   These are relation less databases and also more scalable and provide superior performance. NoSQL databases are mainly divided   into 4 parts. Key value based database.           Store data as key value pair.     Eg: redis , memcachedDB , Riak Column based database. Store data in column families. These type of databases are used to storing very large number of record with very   large number of information. Eg:Cassandra , HBase Document based database. Store data as document [JSON , BSON , XML] in maps or collection. Complex and arbitrary structure can from a document , these document can be stored using these database.  Eg:MongoDB Graph based database. Store data with node and edges connecting each othe...