2.1.3 Custom Data Properties
Content type: application /vnd.openxmlformats-officedocument.customDataProperties+xml
Source relationship: http://schemas.openxmlformats.org/officeDocument/2006/relationships/customDataProps
An instance of this part type specifies a single custom data properties part. This part specifies properties for the associated custom data part, as specified in section 2.1.2, specifically a unique identifier (UID) for the data storage.
A custom data properties part MUST be the target of an implicit relationship from the workbook part, as specified in [ISO/IEC29500-1:2016] section 12.3.23.
A custom data properties part is permitted to contain implicit relationships to the custom data part specified in section 2.1.2.
The syntax of the structures contained in this part uses XSD, as specified in [XMLSCHEMA1/2] and [XMLSCHEMA2/2].
This specification defines and references various XML namespaces by using the mechanisms specified in [XMLNS].
The content of this part is XML, and the root element for the part is the datastoreItem element, as specified in section 2.4.35.