National Geospatial Data Repository Centralised or Distributed?

Transcription

1 National Geospatial Data Repository Centralised or Distributed? Dr. Aniruddha Roy Vice President Navayuga New Delhi, INDIA

2 Presentation Overview NGDR - Prespective NGDR - Stakeholders Boundary Consistency in Spatial Data Centralised Data System Distributed Data System Hybrid Data System Observations

3 NGDI -Perspective Buildings Land Ownership Transportation Boundaries Survey Field Observations Field measurements loaded into GIS system Geodetic Control Imagery GIS data management, analysis and mapping

4 NGDI -Stakeholders Survey of India Geological Survey of India CGWB IMD NRSC RGI ( Census) CWC NBSS & LUP NATMO FSI.

5 National GIS Effort for Data Repository Direction Mandate Money Policies Policies to Enable Sharing Management Framework Procedures Infrastructure National Geospatial Data Infrastructure Framework Metadata & Clearinghouses Standards Local District State Central International Private / Others People Hardware Software Network Methods Training

6 Vertical Data Composition GIS contains many layers superimposes with same spatial extent Base Map Data Elevation Surface Geology

7 Boundary Issues Data inconsistency with base maps even if organizations follow same standards w.r.t Scale Projection Accuracy Content Format Org A Org B Org C

8 Data Consistency with Base Maps Survey of India, Toposheets are taken as base map Practice is prevalent for all scale of maps The administrative boundary mismatch Lead to wrong decision process for the Boundary areas Mandate may be provided for the Quality checks before Homeland data Security loading in the servers

9 Role of DBMS -Traditional System Geographic Information System Data load Editing Visualization Mapping Analysis Task Database Management System Storage Indexing Security Query Data

10 Integration within the Spatial Database RDBMS Points Measurements And Computations SURVEY AND ANCILLARY DATA GIS DATA Vectors Networks Terrain CAD Images

11 Popular RDBMS Spatial Data Types Name Oracle Sql Server Postgre SQL DB2 Informix Sybase Spatial Extension Oracle Spatial Sql Server Spatial Post GIS DB2 Spatial Extender Informix Spatial DataBlade Sybase Spatial

12 GIS Gateway to DBMS Sl.No. Name Spatial Data Connector Supported Database 1 ESRI SDE Oracle, Informix, DB2, Postgre SQL, SQL Server 2 Autodesk FDO Oracle, SQL Server, ARCSDE, MySQL, ESRI SHP 3 SuperMap SDX+ Oracle, SQL Server, DB2, Postgre SQL 4 MapInfo MapXtreme Oracle, Informix, DB2 5 Geomedia 6 Bentley GeoMedia WebMap 2013 (Inbuilt) Oracle Spatial, SQL Server,MS Access Oracle, SQL Server (ODBC Connectivity)

13 Industry Perspective-GIS Data Storage of vector, raster and descriptive data Management using standard means of present day database technology Seamless map Multi-user access to data Transactional processing Data security Integration with third parties products at data level

14 Industry Perspective-GIS Data GIS data is becoming more distributed not more centralized GIS logic needs to be more distributed not connected to either a single database or a single server. Challenge is to use Multiple Technologies and achieve interoperability without loss of data

15 Data Producers and Consumers Producers Datasets & Products Consumers

16 Centralised Vs Distributed Centralised Distributed

17 Centralised Vs Distributed Centralized database : Database located and maintained in one location. One main advantage is that all data is located in one place. The disadvantage is that bottlenecks may occur. Distributed database : Database in which storage devices are not all attached to a common processing unit such as the CPU.

18 Data Publication/Subscription Model Data flows securely, automatically and in real time from Publisher to Subscriber

19 Supported Data Sharing Models 19 SaaS Mapping Platform

20 Hybrid Model Consumers with various applications Staging Server National Building/Structure Asset Register Distribution Server National Data Producing Agencies Slide 20

21 Concluding Points Repositorycommonly refers to a location for storage, often for safety or preservation Data Consistency is important for GIS NGDR Data Access, Storage, Management and Dissemination Mechanism for Repository should be hybrid in nature Physical security + Network Security DC and DR in two separate Power Supply zones other than different seismic zones

22 Thank You