It is of interest to note that MongoDB is now in the Top 10, currently ranked fifth. Initially proprietary, MongoDB was later released as open source.ĭB-Engines ( ) provides up-to-date rankings of competing database systems. The first version of MongoDB was introduced in 2009 by 10gen ( ) (later MongoDB Inc.) to address a crying need not addressed by the current stable of RDBMS systems, which were, for the most part, based on almost 50-year-old technology handling big data and modeling objects. ![]() Ingres, in turn, spawned Postgres, Sybase, Microsoft SQL Server, and others. It formed the basis for what we now know as RDBMS ( Relational Database Management Systems), using SQL ( Structured Query Language), adopted by IBM, Relational Software (later Oracle), and Ingres ( (database), a research project at the University of California in Berkeley. Codd ( ), an English computer scientist working for IBM, published his seminal paper, A Relational Model of Data for Large Shared Data Banks in 1970. MongoDB represents a radical and much needed departure from relational database technology.
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