The Semantic view models the most salient Architecture Building Blocks that should be considered in order to support semantic interoperability of information exchanges between administrations, businesses and citizens. Narrative: [Business Information] is realised by a [Representation] of [Data]. [Data] can be grouped in [Data Sets], which can be documented in [Data Set Catalogues]. [Master Data], [Transactional Data], [Reference Data], [Open Data], [Descriptive Metadata] and [Base are specialisations of [Data]. [Representation] and [Data] are influenced by [Data Policies], which are [Organisational Policies], which is in turn are influenced by [Public Policies]. These different Architecture Building Blocks define the [Semantic content] and each of these Architecture Building Blocks can have any [Interoperability Specification] associated, of which the [Semantic Interoperability Specification] is a specialisation. The following [Semantic Interoperability Specifications] are identified: [Core Data Model] and [Data Entities] which are a specialisation of [Data Models], [Character Encoding Scheme], [Syntax Encoding Scheme], [Data Level Mapping], [Schema Level Mapping] or [Identifier Scheme].