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Definition of eau. plural. eaux. \ËÅ(z)\. : a watery solution (as of perfume); especially : a liqueur of moderate density and sweetness.
Entityâattributeâvalue 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.