Implementation through European Community Research Projects

  • Published on
    05-Jan-2016

  • View
    30

  • Download
    0

Embed Size (px)

DESCRIPTION

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

Transcript

<ul><li><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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.</p><p>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.</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>Main obstaclesThe main obstacles that came through for this idea to be fulfilled were:</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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:</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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 &amp; information management.Improve the exchange, availability and accessibility of ocean &amp; marine data and information.Expand the online metadatabases with input of research institutes.Improve the online accessibility of Sea-Search services &amp; 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 &amp; 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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>Web Services fundamentalsFirst of all what is a Web Service?</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>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</p><p> IMDIS 2008 HCMR / Hellenic National Oceanographic Data Center State of the art Technologies for GIS Management Systems:Implementation through European Community Research Projects</p><p>Geos...</p></li></ul>

Recommended

View more >