XML Schema and Data Set Constraints

Constraints applied in the NHS Data Model and Dictionary to XML Schemas and Data Sets.

Description

Constraints applied in the NHS Data Model and Dictionary to XML Schemas and Data Sets.

  • XML Schema Constraints pages:

    • Show any differences between the data elements as described in the NHS Data Model and Dictionary and required constraints to these which have been coded into the XML Schema for a specific data set. This may include differing format/lengths of data elements, constrained lists of allowed National Codes, or additional validation to allow a constrained range of values or a specific data pattern.

  • Data Set Constraints pages:

    • Show the same information, but the constraints are not applied in the XML Schema which is used to submit data (or the submission is not in XML format). In these cases the validation of allowed data would take place at the data landing stage.

XML Schema Constraints:

Data Set Constraints:

Where Used

Type Link How used
Data Element UNIT OF MEASUREMENT (UCUM) references in description XML Schema and Data Set Constraints