MongoDB

MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need

• MongoDBstores data in flexible, JSON-like documents, meaning fields can vary from document to document and data structure can be changed over time
• The document modelmaps to the objects in your application code, making data easy to work with
• Ad hoc queries, indexing, and real time aggregationprovide powerful ways to access and analyze your data
• MongoDB is adistributed database at its core, so high availability, horizontal scaling, and geographic distribution are built in and easy to use
• MongoDB isfree and open-source, published under the GNU Affero General Public License