Implementation through European Community Research Projects

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Implementation through European Community Research Projects. State of the art Technologies for GIS Management Systems. L ykiardopoulos Angelos, Iona Athanasia, Lakes Vasilis, Balopoulos Efstathios, Kalkavouras Constantine. Hellenic Center for Marine Research. - PowerPoint PPT Presentation

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  • State of the art Technologies for GIS Management SystemsImplementation through EuropeanCommunity Research ProjectsHellenic Center for Marine ResearchLykiardopoulos Angelos, Iona Athanasia, Lakes Vasilis, Balopoulos Efstathios, Kalkavouras Constantine

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Data Management Historical Brief At the end of 80s and early 90s several Oceanographic Data centers had created Databases with mass storage of spatial Information which concerned Oceanographic research outcomes. This was en enormous step of digital storage because big data volumes organized in Database Systems.PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    In other words the data centers owned databases Based on various RDBMS mechanismsWith their own database SchemasWith their own data vocabulary (if existed)With raw data in various formatsWith Applied various processes of data quality control (or with no data quality control)This effort of course leaded into the creation of several data bases without any Interoperability among them.Data Management Historical BriefPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The centralized Data Management IdeaBut the oceanographic community had the need of homogenized and comprehensive data sets for various regions and even world wide. Due to the limitations of information technologies this goal was achieved in the framework of several E.U. projectsCentral accumulation of data from various Data Centers took placeData sets were processed in common data formats and more or less same Q.C. procedures. Finally the dissemination of these Data sets was carried out mainly via digital media (CD-ROMs, etc).PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The centralized Data Management IdeaDuring this process:Diverse Data form a wide range of Data Centers were gathered.Common homogenization and QC procedures were passed.And finally some comprehensive Data sets were produced and disseminated.

    ButThe produced Data Sets were stand alone products stored in digital media.Without any dynamic mechanism of maintenance and enhancement.And without any online access.

    PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    From Centralized to Distributed modelThus, the idea of a distributed Oceanographic Data network among the Data Centers started growing up. Since Web technologies were being developed rapidly, became apparent that the above network has to be web based.PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Main obstaclesThe main obstacles that came through for this idea to be fulfilled were:

    Data bases were in different Schemas and Technologies specific per Data center so there was not any common data interchange mechanism. Data were not homogenized among Data centers.Data quality and Data vocabulary differed from Database to DatabasePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    From Non Spatial to Spatial Enabled DatabasesAt the same time another obstacle was that due to premature Data Base technology many RDMBS systems lacked spatial capabilities. So it was very difficult for the end user:To query the Database with spatial criteriaTo represent geographically the spatial information and produce geospatial productsTo work interactive with Geo Data through interfaces with geospatial capabilitiesTo combine geospatial data with synthetic data products Hence, for a distributed Oceanographic Data network to be established, the necessity of GIS enabled Databases to become apparent as well.PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    From Non Spatial to Spatial Enabled DatabasesAt the end of 90s most of the common used RDBMS were enriched with spatial capabilities and became then powerful mechanisms of integration, exploitation and presentation of spatial information Oceanographic data centers, exploited this advantage and started upgrading their databasesPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Interoperability obstacle is remaining But still the luck of interoperability was unsolved. The spatial databases made researchers life easier with regard to querying data or representing graphically geospatial information but they were acting without any interconnection among the various Data Centers. PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Web Services At the same time with the efforts of the Oceanographic community to overcome the obstacle of interoperability of diverse data management systems and during the last five years new technologies instead of traditional web access tools aroused and became common known as:

    Web ServicesPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    SEA DATA NETSEASEARCHMEDAR/MEDATLAS IIMEDATLASSummarizing the historical brief throughout important E.U. projects 1994Efforts in QCData homogenizationCentralized managementDistribution with CD ROMs1998Enrichment of existing data setsEstablishment of common protocols in QC and formattingEnhancement of communication facilities (www, ftp, e-mail etc)20022006Development of a pan-european network for ocean and marine data & information management.Improve the exchange, availability and accessibility of ocean & marine data and information.Expand the online metadatabases with input of research institutes.Improve the online accessibility of Sea-Search services & products.To network existing oceanographic data centres already nationally funded. To develop an efficient distributed pan-European marine data management Infrastructure (virtual data center).To provide on-line access to integrated databases of standardised quality by using adapted communication & information technology (Web Services).PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Web Services fundamentalsFirst of all what is a Web Service?

    The hidden idea behind WS is the existence of a universal messaging mechanism, capable to deliver and translate messages for diverse and different systems. This feature came to open the road for the solution of interoperability.If different and diverse systems can interpret and process requests from each other let them stay different.PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    There are various theoretical definitions of What a Web Service isA software system designed to support interoperable machine-to-machine interaction over a network. It has an interface described in a machine - processable format (specifically WSDL). Other systems interact with the Web service in a manner prescribed by its description using SOAP messages, typically conveyed using HTTP with XML serialization in conjunction with other Web-related standards. (W3C, 2004)What is a Web Service?PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    What is a web Service?Web services are a distributed computing architecture. Only this particular architecture makes use of loosely coupled applications, as opposed to tightly coupled applications, to enable applications to communicate. This tightly coupled concept radically affects how information systems will work in the future (Clabby 2003)PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    What is a web Service?Generalizing we may define that Web services provide a convenient and standardised way of exposing business logic over a network (the Internet) by use of specific components of communication such as SOAP,UDDI,WSDLPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    UDDI (Universal Description, Discovery and Integration) which provides the ability to dynamically select a service at runtime.SOAP (Simple Object Access Protocol) which provides a Standardized messaging structure based on XML.WSDL (Web Services Description Language) which describes how the client communicates with a Web service or what a service does or where is located.Web Service ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    In the most simple form a web service architecture may be depicted as the diagram Web Service ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Geospatial Web ServicesThe rapid development of technologies towards WS concept has produced several sets of Web Services with regard to the area of the WS applicability. Especially for Geospatial data, Open Geographical Consortium (OGC) has defined two basic sets of Geospatial Web Services.PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The Web Map Services (WMS) which are concerned with transforming spatial data into maps (images). The Web Feature Services (WFS) which are concerned with direct access to data - reading, writing, and updating data.WMS and WFSPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Furthermore, more Web services are under finalization process, one of the most important of them is Web Processing Services WPS is designed to standardize the way that GIS calculations are made available to the Internet. WPS can describe any calculation (i.e. process) including all of its inputs and outputs, and trigger its execution as a Web Service. WPS supports simultaneous exposure of processes via GET, POST, and SOAP, thus allowing the client to choose the most appropriate interface mechanism.Web Processing ServicesPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC The HNODC data management case.PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Hellenic National Oceanographic Data Center (HNODC) is a National Public Oceanographic Data provider and at the same time a member of the International Net of Oceanographic Data Centers (IOC/IODE) HNODC owns a very big volume of Data and Relevant information about the Marine Ecosystem HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    For the efficient management and exploitation of these Data, the first step was a relational Data Base to be constructed. After the necessary stage of data quality control took place, following the International standards, as they agreed during several EU Projects or International Organizations. Finally a mass volume of over 300.000 station data concerning , physical, chemical and biological Oceanographic information, was stored in a Relational Data Base.HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The next target aroused then, was an Application to be constructed capable to represent - the Geospatial aspects of this information - together with the non spatial information The necessary analysis took place and a traditional Web Application was developed by the use of the convenient web tools and technologies. Geographical representation was achieved by the use of a Middle Layer tool (ArcIMS) over the Data Base Mechanism.HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The convenient Multilayer Architecture was followed The Relational data base as the back end.ArcIMS as the Geospatial representation Mechanism.Apache and Tomcat in heart of the Middle-Tier System.On the top a web Interface with selection criteria for querying specific data sets in specific geographical areas.

    HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    Data

    Page group

    Laptop

    Data Base

    ArcIMS

    Tomcat

    Apache

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC Web pagePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODCConcluding we may say that the whole Architecture , served its purpose to:Handle data management issuesExpose data dynamically to the webOffer user easy and online data accessRepresent geospatial information graphically

    PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Of course some technical issues aroused, regarding the Applications performance, due to the inefficiency of the Geographical mechanism to handle big volumes of data sets as fast as a Web Application needs. For HNODC this approach is today considered as the first Version (V1) of an Integrated Web Based Environment for its Data Management and Data exploitation. HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Thus and at the time that Web Services became a fact, a second Version was plannedThe target of this effort was an Integrated environment to be developed following at least the basic concepts of a Service Oriented Application (SOA) which are:The interface contract to any Web Service is platform-independent. Any Web Service can be dynamically located and invoked. Any Web Service invoked is self-contained. That is, the service maintains its own state.HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    For the development, new software components and tools replaced the old ones:Geospatial and non Spatial Web Services mechanisms took the place in the Middle- Layer.Geospatial open source tools and custom development was employed in presentation layer.HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    At the same time the application may now interact with any other SOA application either in sending or receiving Geospatial Data, since it inherits the big advantage of interoperability between Web Services systems.

    HNODCPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The Architecture can be denoted as follows: At the back End Open source PostgreSQL DBMS (and not only..) stands as the data storage mechanism.UMN Map Server and Geoserver are the mechanisms forRepresenting Geospatial Data via Web Map Service (WMS)Querying and Navigating in Geospatial and Meta Data Information via Web Feature Service (WFS)And in the near future Transacting and processing new or existing Geospatial Data via Web Processing Service (WPS)HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    MapBender, a geospatial portal site management software for OGC and OWS architectures, acts as the integration module between the Geospatial Mechanisms. MapBender comes with an embedded data model capable to manage interfaces for displaying, navigating and querying OGC compliant web map and feature services (WMS and transactional WFS).

    HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Apache and Tomcat stand again as the Web Service middle LayersApache Axis2 with its embedded implementation of the SOAP protocol acts as the No spatial data Mechanism of Web Services. These modules of the platform are still under development but their implementation will be fulfilled in the near future.

    HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    And a new Web user Interface for the end user based on enhanced and customized version of a MapBender GUI. HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC - ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC Web Interface PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC Web Interface PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    HNODC Web ServicesFor HNODC the interoperability of Web Services is the big advantage since it is capable to act in the future as provider and consumer of Web Services in both ways: Either as data products provider for external SOA platforms. (e.g. SeaDataNet platform) Or as consumer of data products from external SOA platforms for new applications to be developed or for existing applications to be enhanced.

    PASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Further more and when the technology of Web Processing Service (WPS), will be mature enough and applicable for development, the derived data products will be able to have any kind of GIS functionality for consumers across the network.HNODC Web ServicesPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    An Overall ArchitecturePASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    Database

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    A good example of the previous architecture, is the Oil spill Drift forecasting Use Case Scenario for Aegean sea.An implementation: The Oil Spill ScenarioPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Several and diverse Data Sets will be used as inputs in the scenario Application:

    ASAR satellite images Oceanographic dataWave model (WAM) dataTextual InformationGIS data about the nearby coasts layout (roads, urban or protected areas etc)An implementation:The Oil Spill ScenarioPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    The scenario aims to deliver to the end user synthetic information in near real-time regarding:Details about oil spill detection Forecasts about the drift of the oil spill.Additional information about the characteristics and the infrastructure of the nearby coast area The scope of the scenario is to provide the decision makers with all the necessary information to handle the crisis

    The output of the Application will be Synthetic GIS and non GIS information Either via Map images presentationOr textual informationWeb Services will be present as discrete Layers of Information (input or output) from the different Data SourcesAn implementation: The Oil Spill ScenarioPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    A big obstacle aroused was the Harmonization of thevarious datasets.Here comes E.U. HUMBOLDT Project which will contribute to harmonization since it aims to:make an inventory of the data harmonisation issues in the Scenario, assess their importance in the Scenario create Scenario-specific data model, develop harmonization software toolsAn implementation: The Oil Spill ScenarioPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    An implementation: The Oil Spill ScenarioPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    Database

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    In conclusion we may denote that by embedding these new technologies to data management model we can exploit the advantages of:Inheriting interoperability between among Data Centers and Data Providers Interchanging and combining Data Sets with minimum programming effortsProducing comprehensive and self explained new Data Products combing various and diverse data sourcesHelping end user to navigate through a wide range of information ConclusionsPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Thus we are happy to say that HNODC joins the global scientific community by providing and consuming application Independent data products.

    ConclusionsPASTHistorical BriefCentralized D.M.From Centralized to Distributed ModelFrom Non Spatial to SpatialPRESENTWeb ServicesW.S. ArchitectureGeospatial W.S.WMS/WFSWPSHNODC GeneralHNODC ArchitectureHNODC InterfaceHNODC W.S.FUTUREThe new architectureAn exampleConclusions

    IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects

    Thank you for your attention!

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