MIDAS - On-Line Catalogue of Geodata ( METAINFORMATION SYSTEM MIDAS ON-LINE CATALOGUE OF GEODATA OF PUBLIC ADMINISTRATION Bronislava Horáková, Štěpán Kafka, Josef Hojdar Czech Association for Geoinformation (CAGI)

MIDAS - On-Line Catalogue of Geodata ( History GIS growth after district office Absence of standards: –Data caption, processing, –Data structure, formats, –Organization, data flow, updates, law –Documentation, metadata. Massive demand for GIS data Decision CAGI: Metainformation System –overview of existing data for GIS community –tool for system analysis (coordinate requirements, removing duplicities, possible data sharing etc)

MIDAS - On-Line Catalogue of Geodata ( Development Pilot version in 1999 Requirements: –Internet application –input/update via Internet –free access –European standards (CEN/TC 287) compatible Inter-department commission : –coordination of metadata structure –preparing of coding, controlled list etc. –metadata extensions for special needs –interchange XML format

MIDAS - On-Line Catalogue of Geodata ( Structure Object-oriented: –Classes: Dataset Organization Person Service Document Application (software) Event –Each class has common and specific attributes –Open classification mechanism Object 1 Object 2 Object 3 Object 4 Relation 2-3 Relation 1-3 Relation 1-4 Extensible structure, arbitrary relations

MIDAS - On-Line Catalogue of Geodata ( Today Public Administration central catalogue of metadata - supervised by OPIS Metadata content –cca 250 metadata datasets of central administrative bodies problems with lack of metadata deposited on departments problems with missing or unsufficient duties/rules for providing/updating metadata –cca 3200 metadata datasets of district offices captured for analysis of district geodata content (due to reform of public adminstration, districts will be closed on ) GIS data will be delegated to successors (mainly regional offices)

MIDAS - On-Line Catalogue of Geodata ( Analysis - district offices Data acquisition –Organized in the half of 2001 –Information of Datasets, HW, SW, people resources –MS Word Forms, data converted to MIDAS Analysis results –Data present big amount of finance as well as work –Variable extension and quality of GIS database –Uncompatible database contents and structures –Copyright and property problems –It is very hard to adopt the data to new structures (regions) –Regional offices faces to similar situation as districts before 10 years (nearly no standardization, etc.) –results:

MIDAS - On-Line Catalogue of Geodata ( Subprojects MIDAS Lite –Software tool for OFF-LINE metadata acquisition –Build on MDB database –double sided data exchange with MIDAS –free download: MIDASKraj –pilot project on Zlin Regional Office –full implementation of MIDAS software –using extensions for specific tasks on office –metadata export/exchange to central MIDAS