Bavarian Ministry of Finance AAA - The contribution of the AdV in an increasing European Spatial Data Infrastructure - the German Way Markus Seifert Bavarian Administration for Surveying and Cadastre General Assembly of the Permanent Committee on Cadastre (PCC), , Hamburg

Bavarian Ministry of Finance 2 Personal Background Member of the DVW Working Group on geoinformation − Delegate to FIG Com 7 Head of the SDI office in Bavaria − Establishment of a SDI in Bavaria Head of the project team “SDI Standards” of the AdV − Responsible for developing and mainenance of the new integrated cadastre model ALKIS Representaive of the AdV to the OpenGeospatial Consortium (OGC) − AdV becomes a technical member of OGC Head of the German delegation to ISO/TC 211 Member of the Drafting Team “Data Specification” at INSPIRE

Bavarian Ministry of Finance 3 Content SDI - The European way SDI and AAA – The German way The new integrated cadastre model ALKIS − Content − Contribution to the NSDI Geoservices

Bavarian Ministry of Finance 4 Current situation in Europe Data policy restrictions pricing, copyright, access rights, licensing policy Lack of co-ordination across boarders between levels of government Lack of standards and their use incompatible information incompatible information systems fragmentation of information redundancy Lack of data EU has islands of data of different standards and quality... No spatial data infrastructure

Bavarian Ministry of Finance 5 Framework for E-services „AAA implementation started in 2005“ The aim is the a harmonised framework directive for implementation of a European spatial data infrastructure (ESDI) INfrastructure for SPatial InfoRmation in Europe INSPIRE GI-standards GI-specifications SDI Germany

Bavarian Ministry of Finance 6 Requirements for an ESDI A European spatial data infrastructure basically needs (strategic view) Harmonized geodetic reference Metadata for discovery of existing data Harmonized geodata and geo-services Bundle geodata and geo-services within one European portal Handle access rights and licensing policies for all users Controlling and monitoring of the implementation within the EU member states Methodology for building up a ESDI (considering process, consensus process, decision making etc.) Keep data where it is collected and maintained and make it accessible for other using geo-web services (WMS, WFS etc.) All these issues are addressed by the INSPIRE framework directive and the implementation rules

Bavarian Ministry of Finance 7 Requirements for INSPIRE Upcoming work for EU member states during the IR review phase

Bavarian Ministry of Finance 8 Content SDI - The European way SDI and AAA – The German way The new integrated cadastre model ALKIS − Content − Contribution to the NSDI Geoservices

Bavarian Ministry of Finance 9 The National Geodatabase – Reference Data ALK Automated Real Estate Map Quite a lot of redundant information ALB Automated Real Estate Register Offical Topographic and Cartographic Information System ATKIS Geodetic Reference Points AFIS-ALKIS-ATKIS Application Schema

Bavarian Ministry of Finance 10 Information receive:(reconstruction) data (farmalising) send: Information „my car“ data(Transfer) „his car“ car Data modelling: Data and Information

Bavarian Ministry of Finance 11 Information Transmitter: Reveiver: DataData (Transfer) (formalising)(reconstruction) Information c a r Metadata: Class „car“: Attribute „producer“ Attribute „price“ Attribute „colour“ Attribute „production year“ Attribute „condition“ Attribute „current milage“ Attribute „notation“ Data modelling: Data and Information

Bavarian Ministry of Finance 12 Model-driven Approach is promoted for a ESDI This and the following recommendations are listed in the Technical Report CEN/TR “Geographic information - Standards, specifications, technical reports and guidelines, required to implement Spatial Data Infrastructures”

Bavarian Ministry of Finance 13 Data modelling as a basis for a SDI A simple overlaying of maps in the internet do not need a object-oriented data model but sifficient search and presentation functionalities (web map services) In future the requirements for geo- information will increase, that means geoinformation must be (automatically) readable Requirements  Standardised and readable description of the digital content using a data model  Internet services that can handle geoinformation in the internet (search, find, interpret, process, transfer und present  web feature services)  A spatial data infrastructure thererfore needs web functionalities as well as standardised data models for describing all geoinformation (reference data and thematic)

Bavarian Ministry of Finance 14 Preconditions for a SDI (data modelling view) Model-driven approach for describing the data Semantic harmonization of the existing data as far as possible and sufficient (feature catalogues) Application of the ISO standards for data modelling and encoding Implementation of metadata information systems for discovery and access to the data Implementation of interoperable web services for data access distribution (ISO, OGC) Operational issues (registries etc.) Legal issues (data sharing, IPR etc.) Pricing AAA data model Contribution of the AAA Model to the European SDI

Bavarian Ministry of Finance 15 Content SDI - The European way SDI and AAA – The German way The new integrated cadastre model ALKIS − Content − Contribution to the NSDI Geoservices

Bavarian Ministry of Finance 16 17/1 17/3 17/2 17/ parcel boundary boundary point Content of the new cadastre information system (ALKIS) Legal classification Land use + location, owner,... Reference points buldings

Bavarian Ministry of Finance 17 17/1 17/3 17/2 17/ owner Motorway A 7 III. Order Ilm Industry and commerce District 8633 number 17/2 area 657 School 2 levels Industrial use 2 levels Land register Main street 12 Content of the new cadastre information system (ALKIS)

Bavarian Ministry of Finance 18 Cadastral data model described with UML

Bavarian Ministry of Finance 19 Unified Modelling Language (UML) Application schemas are documented by using a conceptual schema language. Such a language may have a well defined graphical notation (such as UML for class diagrams) but also a machine-readable format. The use of UML according to ISO/TS is promoted as an ESDI conceptual schema language. Parcels, Location, Geodetic Points Owner, Property Rights Houses Land Use Buildings, Facilities and other Facts Relief, DTM Legal Classification, Administration Areas User Profile Migration Objects

Bavarian Ministry of Finance 20 Consequent use of International Standards Recommendation: ISO and referred standards are promoted as ESDI rules for specifying data structures and semantics Conceptual schema language (UML) Rules for application schema Rules for application schema Feature catalogue Feature catalogue – Geometry, CRS – Metadata – Geometry, CRS – Metadata AAA application schema NAS (XML-Schema) NAS (XML-Schema) Feature Catalogue (XML) Feature Catalogue (XML) Feature Catalogue (HTML, RTF) Feature Catalogue (HTML, RTF) Level (GML) profile

Bavarian Ministry of Finance 21 Determine ISO-profiles for specific domains Extract of ISO Spatial Schema: Geometry Schema Answer the following questions: Are all these elements relevant for a SDI or a common used data model within one thematic domain? If not, which are relevant? Domain a State A Domain a State B

Bavarian Ministry of Finance 22 Components of the AFIS-ALKIS-ATKIS-Data model Data exchange interface NAS (standard based data exchange interface) AAA basic schema as profile of ISO that specifies common used data elements (e.g. geometric primitives) UML Cadastre feature catalogue automated creation by using a tool (Rational Rose script) Topography feature catalogue AAA thematical schema UML interface xxx xxx- feature catalogue Thematical schema xxx Generic Structure of the AAA data model

Bavarian Ministry of Finance 23 General structure of a feature Structure of a feature catalogue Geometry Operations Presentation Use cases Baseline for thematic application schemas: The AAA Basic Schema

Bavarian Ministry of Finance 24 AdV basic schema Standardised Data exchance interface (NAS) Thematic exchange interfaces AAA thematic schema Cadastre (ALKIS) 3D information Real Esate prices Rural development Town planing AAA basic schema as basis for thematic information systems Modelling of thematic data

Bavarian Ministry of Finance 25 Content SDI - The European way SDI and AAA – The German way The new integrated cadastre model ALKIS − Content − Contribution to the NSDI Geoservices

Bavarian Ministry of Finance 26 Geo Web Services All web services are implemented under consideration of the activities of SDI-Germany AdV defined a profile of the Web Map Server specification, determine some further definitions to fill degrees of freedom, e.g:- CRS - Raster format - etc. A WFS-G (Gazetteer service) will be implementated for providing coordinates for buildings A catalogue service for discovering and harvesting metadata will be implementated based on ebRIM or CSW DE profile For operational implementation of the SDI Germany a registry will be applied For examples see

Bavarian Ministry of Finance OGC Web Map Service (WMS) Request of digital maps in raster format (PNG, GIF, TIFF, JPEG) coming from seperated digital geographic databases Displaying with a web viewer (web browser or GIS) Precondition: georeferencing, metadata, URL Functionalities: GetCapabilities, GetMap, GetFeatureInfo Geoservices

Bavarian Ministry of Finance OGC Web Feature Service (WFS) Request to geo resources in vector format (attributes and geometry) Displaying with a web viewer (web browser or GIS) Precondition: Georeferencing, metadata, URL Functionalities: GetCapabilities, DiscribeFeatureType, GetFeature Extension: Transaction-WFS (read only and update) Geoservices

Bavarian Ministry of Finance Online Presentation Geo web services: E-services related on cadastre:

Bavarian Ministry of Finance 30 Conclusions The AAA data model with the basic schema offers a thematic- independent and generic model framework that can be a baseline for modelling of other thematic domain data models. That will help to standardise the geoinformation in Germany. A SDI for geoinformation (not just geodata) needs an exact and transparent definition of the sharable data. Therefore the same methodology as defined with the AAA data model can be used. Doing this a national geo database can be established. The AdV offers support by using the UML tools for defining the data model and deriving the data exchange interface. Specific guidelines have been published on the AdV home page. The AdV guaranties maintenance at least until The success of the AAA data model bases on the consequent use of international GI standards from ISO. Geoservices will help to provide cadastral information and can be integrated within variable applications of e-government solution.

Bavarian Ministry of Finance 31 For more information see Questions?