NoSQL

NoSQL is a broad class of database management systems that differ from the classic model of the relational database management system (RDBMS) in some significant ways, most important being they do not use SQL as their primary query language. These data stores may not require fixed table schemas, usually do not support join operations, may not give full ACID (atomicity, consistency, isolation, durability) guarantees, and typically scale horizontally.

Related Topics:

• SQL - structured query language used by conventional RDBMS
• CouchDB - document-oriented database engine using JSON
• MongoDB - document-oriented database engine using BSON (binary JSON)
• ApacheHadoop - tabular NoSQL database engine

Related Links:

• Wikipedia:NoSQL - NoSQL article on Wikipedia
• http://troels.arvin.dk/db/rdbms/ - comparison of different SQL implementations

-- Contributors: PeterThoeny - 2012-03-11

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