Further developments of the implementation of the ALKIS-ATKIS

Further developments of the implementation of the ALKIS-ATKIS model using the International Standards 19100 A status report 2001 -10 -24 Workshop on standards in action

Presentation l l by Erhard Pross, Leipzig with contributions from – Markus Seifert, Munich – Clemens Portele, Bonn – Claus-Dietrich Werner, Hannover – Elmar Happ, Bonn 2001 -10 -24 Workshop on standards in action 2

Overview l l short introduction to ALKIS-ATKIS application of ISO Encoding Rules in ALKIS implementing a standards-based Spatial Data Infrastructure for state governments in Germany final remarks 2001 -10 -24 Workshop on standards in action 3

Introduction (I) - Abbreviations l ALB Automated Real Estate Register l ALK Automated Real Estate Map l ALKIS® Authoratative Real Estate Cadastre Information System (Integration of ALB and ALK) l ATKIS ® Authoratative Topographic-Cartographic Information System l NAS standardized data interface 2001 -10 -24 Workshop on standards in action 4

Introduction (II) cadastre information scale 1: 500. . . 1: 2000 ALB topographic information scale 1: 25000. . . 1: 1 Mio ALK ATKIS new integrated ALKIS-ATKIS model 2001 -10 -24 Workshop on standards in action 5

ALK: Automated Real Estate Map l standardized data interface (NAS) ALK coloured Trees Enviroment Sewers Graphics Courtesy of LVerm. A NRW 2001 -10 -24 Workshop on standards in action 6

ALKIS l l l official Cadastre Information System supported by all federal states integration of ALK & ALB object-oriented data model specifications available to GIS vendors based on ISO Standards 2001 -10 -24 Workshop on standards in action 7

ALKIS-ATKIS reference model ALKIS-ATKIS catalogues regulates maps, other data ALKIS data digital image model ATKISDLM TIFF NAS describes dig. ALKIS data ATKISDTK presented in nondig. ALKIS data topographic map TIFF, DXF, . . . distributed to user 2001 -10 -24 Workshop on standards in action 8

ALKIS-ATKIS package in the ISO model 2001 -10 -24 Workshop on standards in action 9

Overview (II) l l short introduction to ALKIS-ATKIS application of ISO Encoding Rules in ALKIS implementing a standards-based Spatial Data Infrastructure for state governments in Germany final remarks 2001 -10 -24 Workshop on standards in action 10

ALKIS-NAS: Starting Point NAS (XML-Schema) ? 19118 ? GML ? 19109 Feature Catalogue (HTML, RTF) Feature Catalogue (XML) ALKIS Application Schema (UML) 19110 19107 – 19111 19112 – 19115 19103 2001 -10 -24 Workshop on standards in action 11

Challenges (I) l l l avoid consequences on the technical UML application schema a data interface structured as simple as possible is of fundamental importance for the acceptance of ALKIS by potential users NAS should avoid unnecessary complexity not to build up an unnecessary barrier for the use of geographic data in Germany 2001 -10 -24 Workshop on standards in action 12

Challenges (II) NAS should be based on international accepted basic standards as far as possible l there is the urgent need to examine the encoding rules at concrete instances before establishing the NAS l the requests for an update mechanism have to be taken into account l 2001 -10 -24 Workshop on standards in action 13

ISO 19118: Current Situation Problems are identified by the application of ISO 19118 XML encoding rules within the specification of NAS: – still a draft standard – parallel development at OGC - GML Both developments are not coordinated (first attemps are recognized, but a complete harmonization is probably not expectable) GML and ISO 19118 XML Encoding Rules are not compatible – No standardized XML-schemas are available for the ISO 19100 basic schemas Loss of interoperability 2001 -10 -24 Workshop on standards in action 14

GML: Current Situation There also problems with GML: no exactly defined references to ISO 19100 draft standards l no update mechanism l topology is not supported by GML 2. 0 l no support of splines and arcs l 2001 -10 -24 Workshop on standards in action 15

Strategy of Germany (I) l use of ISO 19118 Level 1 in ALKIS ISO 19118 compliant documentation of „NAS Encoding Rules“, which maps the conceptual ALKIS data model to a GML-2. 0 application schema (in future GML 3. 0) NAS Encoding Rules are defined as simple as possible and largely compliant to ISO 19118 XML Encoding Rules l support the beginning harmonization between ISO 19118 XML Encoding Rules and GML Objective: ISO 19118 Level 2 conformity for ALKIS -NAS 2001 -10 -24 Workshop on standards in action 16

Strategy of Germany (II) Additional geometrical specifications: l l l arcs and splines definition of a GML 2. 0 compliant extension mechanism objective use of GML 3. 0 elements – consider existing GML 3. 0 drafts (arcs) – otherwise using ISO 19107 geometrical elements (splines, surfaces) 2001 -10 -24 Workshop on standards in action 17

Strategy of Germany (III) NAS (XML-Schema) GML 2. 0 19118 Level 1 19109 Feature Catalogue (HTML, RTF) Feature Catalogue (XML) ALKIS Application Schema (UML) 19110 19107 – 19111 19112 – 19115 19103 2001 -10 -24 Workshop on standards in action 18

Overview (III) l l short introduction to ALKIS-ATKIS application of ISO Encoding Rules in ALKIS implementing a standards-based Spatial Data Infrastructure for state governments in Germany final remarks 2001 -10 -24 Workshop on standards in action 19

GEOBASIS. NRW & GDI NRW GEOBASIS. NRW - Basic geodata l l adaptation of ALKIS specification to the needs of Nordrhein-Westfalen (NRW) project to assist state government in the implementation of ALKIS GDI NRW - Enhance the using of geoinformation l l Geographic Data Infrastructure for the state of Nordrhein -Westfalen project to assist the creation of interoperable solutions 2001 -10 -24 Workshop on standards in action 20

Departments, Public IS, . . . Geodata "Bus" NRW Product A Product B Product C Geo. Data. Server NRW Local Geodata "Bus" GDI NRW GEOBASIS. NRW Local Geo. Data. Server 2001 -10 -24 Workshop on standards in action 21

First Phase l l l Ø ALK-GIAP® @GIS AEDDesktop AIS Other Clients from July 1999 to December 2000 first prototype shown at – Inter. GEO 2000 Berlin, September 2000 – Ce. BIT 2001 AEDIDB Hannover, March 2001 Implementation of an OGC - Simple Features AEDIDB Extension for Oracle 8 i / Informix IDS 2000 OGC Simple Features Enabling interoperability Geodata Server for ‚legacy‘ systems 2001 -10 -24 Workshop on standards in action 22

Second Phase l l Ø from January 2001 to December 2002 implementation of a prototype for editing ALKIS shown at – Inter. GEO 2001 Cologne, September 2001 implementation of a web-based client Next generation of cadastral software based on Arc. GIS 2001 -10 -24 Workshop on standards in action 23

Overview (IV) l l short introduction to ALKIS-ATKIS application of ISO Encoding Rules in ALKIS implementing a standards-based Spatial Data Infrastructure for state governments in Germany final remarks 2001 -10 -24 Workshop on standards in action 24

Final remarks l l Germany‘s GI community uses standard based modelling using both ISO standards and OGC specifications hope for a nearly perfect cooperation presenting further results next year in Bangkok 2001 -10 -24 Workshop on standards in action 25