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SQL - Department of Computer Science
SQL - Department of Computer Science

... A joint with American National standards Institute (ANSI) and International Standards Organization (ISO) led to the standard version of SQL-86 A revised and expanded in 1992 called SQL-92. Most recent is now SQL-99 ...
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Entity–attribute–value model

Entity–attribute–value model (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In mathematics, this model is known as a sparse matrix. EAV is also known as object–attribute–value model, vertical database model and open schema.
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