A Multimodel database management system (DBMS) is a database system that is built with a data records using an entity-relationship data model. The data is stored using a variety of logical models or views and uses a flexible combination of KeyValue pairs, documents and graphs.
ArangoDB
AranoDB is a flexible data model that uses a combination of documents, KeyValue pairs and graphs to store data. It is easy to use due to a graphical interface and it is licensed under the Apache License. It is a fast database that takes up less space than conventional NoSQL databases.
Alchemy database
The Alchemy database is a hybrid database that combines RDBMS and a NoSQL datastore. It can store unstructured and structure data as the Alchemy database does not have limits on tables, columns or indexes. It operates on commodity hardware and is easy to install.
