1.1 What is reference data1.2 Structure in reference data: Hierarchies and relationships1.2.1 Tree hierarchies1.2.2 Level-based hierarchies1.2.3 Poly hierarchies1.3 Challenges of managing reference data1.4 The cost of unmanaged reference data1.4.1 Costs related to business risk1.4.2 Increased IT cost1.4.3 Cost of business inflexibility1.5 Reference data governance with master data management approach1.6 InfoSphere MDM Ref DM Hub feature overview1.6.1 Key functions of the InfoSphere MDM Ref DM Hub1.6.2 Understanding reference data sets1.6.3 Understanding reference data types1.6.4 Mapping reference data sets1.6.5 Managed systems1.6.6 Batch export