That need prompted MongoDB (NASDAQ: MDB) to introduce Atlas, a non-relational database that can store unstructured data types. However, Oracle responded by introducing its own non-relational database.

Most every business database management system (DBMS), including Oracle, DB2, SQL Server, MySQL, etc., is a relational DBMS (RDBMS) (see DBMS). In non-relational "hierarchical" and "network ...

classified as part of the NoSQL or non-relational database category, would become a feature of relational systems rather than a category on their own. "The intellectual distance between document ...