Indicator (metadata)

Short description: Boolean value in metadata that may contain only the values true or false

In metadata, an indicator is a Boolean value that may contain only the values true or false. The definition of an Indicator must include the meaning of a true value and should also include the meaning if the value is false.

If a data element may take another value to represent e.g. unknown or not applicable, then a Code should be used instead of an Indicator, and the meanings of all possible values should be clearly defined.

The suffix Indicator is used in ISO/IEC 11179 metadata registry standard as a representation term.

## Contents

* 1 Example of Use of Indicator in XML
* 2 Standards that use the indicator representation term
* 3 See also
* 4 References

## Example of Use of Indicator in XML

An example use of the Indicator suffix is if an XML document was required to contain the passing status of a Student in a statewide assessment. The data element would be:

<StudentPassedAssessmentIndicator>true</StudentPassedAssessmentIndicator>

## Standards that use the indicator representation term

The following metadata registry standards use the term indicator

* ebXML
* NIEM
* GJXDM

## See also

* Metadata
* ISO/IEC 11179
* Representation term
* Code

## References

https://web.archive.org/web/20110927233605/https://www.niem.gov/documentsdb/Documents/Technical/NIEM-NDR-1-3.pdf page 65

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