# Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services, Part A: Writing Conventions

Extent: E+W+S+N.I.

Similar to the Regulation (EC) No 1205/2008, the following writing conventions are used for the spatial data service metadata.
Where specified in the description of the metadata elements, the value domains shall be used with the multiplicity expressed in the relevant tables. In relation to a particular domain, each value is defined by:
a numerical identifier,
a textual name for humans which may be translated in the different Community languages,
a language neutral name for computers (the value expressed between parenthesis),
an optional description or definition.
The table present the following information:
the first column contains the reference to the paragraph in the Annex defining the metadata element or group of metadata elements,
the second column contains the name of the metadata element or group of metadata elements,
the third column specifies the multiplicity of a metadata element. The expression of the multiplicity follows the unified modelling language (UML) notation for multiplicity, in which:
N means that there shall be only N instances of this metadata element in a result set,
1..* means that there shall be at least one instance of this element in a result set,
0..1 indicates that the presence of the metadata element in a result set is conditional but can occur only once,
0..* indicates that the presence of the metadata element in a result set is conditional but the metadata element may occur once or more,
when the multiplicity is 0..1 or 0..*, the condition defines when the metadata elements is mandated.
the fourth column contains a conditional statement if the multiplicity of the element does not apply to all types of resources. All elements are mandatory in other circumstances.

---
Source: https://www.legislation.gov.uk/eur/2010/1089/annex/V/part/A (the official version)
Page: https://openlegislation.uk/eu-regulation-2010-1089/annex-V/part-A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.