Overview

Every reference data set (data table) or mapping created within InfoSphere® MDM Reference Data Management Hub has a default set of properties. These reference data set and mapping properties are defined by using reference data types. Every data set and mapping is associated with a data type definition.

The InfoSphere MDM Reference Data Management Hub system comes with two basic data types, Default Reference Data Type and Default Mapping Type, which can be used to define a simple reference data set or mapping. You can create reference data types with additional properties to define more complex reference data sets or mappings.

Properties that are defined in a reference data type can be applied at the reference data set level, or at the value level for sets and mappings. At the value level, properties apply to all the rows of data in a data table or to all value mappings.

Reference data types have a data type property, which designates whether the reference data type is used to create reference data sets or mappings. After the reference data type is saved, its data type cannot be changed.