¶ dx:quantityType
A single measurand that may contain a D-SI element or text. Each value describing a physical quantity is placed in a dx:quantityType. The DX uses the XML schema of the D-SI, which ensures that each numerical value is also specified with its corresponding metadata.
In addition, methods used, software used and influence conditions that only affect this quantity can be added. Metadata can also be added, such as a conformity assessment.
¶ Tree structure
The tree structure of the type dx:quantityType has the following appearance:
¶ Snippet from the XML schema: type definition "quantityType"
<xs:complexType name="quantityType">
<xs:sequence>
<xs:element name="name" type="dx:textType" minOccurs="0"/>
<xs:element name="description" type="dx:richContentType" minOccurs="0"/>
<xs:choice>
<xs:group ref="dx:quantityGroup"/>
<xs:element ref="si:list"/>
</xs:choice>
<xs:element name="relativeUncertainty" type="dx:relativeUncertaintyType" minOccurs="0"/>
<xs:element name="methodList" type="dx:methodListType" minOccurs="0"/>
<xs:element name="softwareList" type="dx:softwareListType" minOccurs="0"/>
<xs:element name="measuringEquipmentList" type="dx:measuringEquipmentListType" minOccurs="0"/>
<xs:element name="influenceConditionList" type="dx:conditionListType" minOccurs="0"/>
<xs:element name="metaDataList" type="dx:metaDataListType" minOccurs="0"/>
</xs:sequence>
<xs:attributeGroup ref="dx:baseAttributeGroup"/>
</xs:complexType>
¶ Description of the elements
See the list of abbreviations here
| Element (Element type) |
Use | Description |
|---|---|---|
| dx:name (dx:textType) |
[O] | This element can be used to store text specifying the language used. |
| dx:description (dx:richContentType) |
[O] | Description of the Quantity. The type dx:richContentType is used to enter any information. With it, it is possible to accommodate text as well as images and formulas in one element. |
| dx:quantityGroup | [O|M] | |
| si:list (si:listType) |
[O|M] | The element si:list is used to enter a list of measurement quantities. |
| dx:relativeUncertainty (dx:relativeUncertaintyType) |
[O] | Relative uncertainty of the D-SI according to GUM is implemented here. |
| dx:methodList (dx:methodListType) |
[O] | The element methodList contains the list of methods used during calibration. It is possible that a method has already been named in a parent element, which is also valid for this dx:quantity. |
| dx:softwareList (dx:softwareListType) |
[O] | Essential information to identify the software used to create and edit the DX is stored here. It is possible that a software has already been named in a parent element, which is also valid for this dx:quantity. |
| dx:measuringEquipmentList (dx:measuringEquipmentListType) |
[O] | Essential information to identify the software used to create and edit the DX is stored here. It is possible that a piece of equipment has already been named in a higher-level element, which is also valid for this dx:quantity. |
| dx:influenceConditionList (dx:conditionListType) |
[O] | Essential information to identify the software used to create and edit the DX is stored here. It is possible that a condition has already been named in a higher-level element, which is also valid for this dx:quantity. |
| dx:metaDataList (dx:metaDataListType) |
[O] |
¶ Attributes
| Attribute | Use | Description |
|---|---|---|
| dx:baseAttributeGroup | [O] | An attribute group called "baseAttributeGroup" is referenced here. This attribute group contains a set of attributes that are commonly used in elements of the DX. An attribute group is a reusable collection of attributes. |