Data types

This section describes data types which make up OS MasterMap Highways Network – Routing and Asset Management Information:

• NetworkReference

• NodeReference

• LinkReference

• PointReference

• MultipleLinkReference

The attributes associated with each data type are listed on the individual data type pages.

Structured data type attribute information

The following information will be provided against each data type.

Name and Definition

The name of the attribute and what it is describing.

Data type

The nature of the attribute, for example a numeric value or a code list value.

Multiplicity

Describes how many times this element is expected to be populated in the data. An attribute may be optional or mandatory within the product. These are denoted by:

• ‘1’ – there must be a value.

• ‘0..1’ – population is optional but a maximum of one attribute will be returned These values may be used in combination.

Size

The length of the attribute provided (optional).