database
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In computing , 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 . Academic researchers typically refer to these databases as structured storage , [ 1 ] [ 2 ] [ 3 ] [ 4 ] a term that includes classic relational databases as a subset. Network databases , semantic web technologies such as resolvers, and object-oriented databases have recently been renamed " NoSQL " although their capabilities haven't changed.
NoSQL - Wikipedia, the free encyclopedia
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The road to SQL started with Dr. E.F. Codd's paper, " A Relational Model of Data for Large Shared Data Banks ", published in Communications of the ACM in June 1970. His colleagues at IBM, Donald Chamberlin and Raymond Boyce were working on a query language (originally named SQUARE, Specifying Queries As Relational Expressions) that culminated in the 1974 paper, " SEQUEL: A Structured English Query Language ".
