General idea, an abstraction that is considered a reality. An entity is the modelling of a real object, i.e. a "station", a "sample point", etc. Data dictionaries established by the National Service for Water Data and Reference-dataset Management (Sandre) include entities (or objects) and attributes (or properties) associated to definitions. An entity may, in particular, be physically translated into a table in a database.
According to AFB and IOWater
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