MongoDB and CouchDB are two different NoSQL databases when it comes to goals and objectives. MongoDB always promotes data integrity and consistency to all of its clients, while CouchDB applies map reduction to merge redundant data. As with building huge and distributed data storage, choosing CouchDB as the storage will consume less time in configuration than MongoDB, since the latter requires us to consider more details. Although CouchDB lacks SQL-like transactions and familiarity of data transactions, the implementation of its data persistency and retrieval requires less code and time. All its foundation objects are derived from its com.cloudant.client.api.CloudantClient, which carries all transactions, from retrieving all databases to data retrieval using map reductions.