Information technology - Environmental Data Coding Specification (EDCS)

Document Number: ISO/IEC 18025:2014
Language: English
Provider: ANSI
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ISO/IEC 18025:2014 provides mechanisms to specify unambiguously objects used to model environmental concepts. To accomplish this, a collection of nine EDCS dictionaries of environmental concepts are specified:

classifications: specify the type of environmental objects;
attributes: specify the state of environmental objects;
attribute value characteristics: specify information concerning the values of attributes;
attribute enumerants: specify the allowable values for the state of an enumerated attribute;
units: specify quantitative measures of the state of some environmental objects;
unit scales: allow a wide range of numerical values to be stated;
unit equivalence classes: specify sets of units that are mutually comparable;
organizational schemas: useful for locating classifications and attributes sharing a common context; and
groups: into which concepts sharing a common context are collected.
A functional interface is also specified.

As denoting and encoding a concept requires a standard way of identifying the concept, ISO/IEC 18025:2014 specifies labels and codes in the dictionaries.

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