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Implementing Internet GIS with Java based Client/Server Environment - MashaOlssen - 08-16-2017 Implementing Internet GIS with Java based Client/Server Environment [attachment=17143] Introduction GIS is an emerging technology encompassing many disciplines namely geography, cartography, photogrammetry, remote sensing, surveying, GPS technology, statistics and other disciplines concerned with handling and analysing spatially referenced data. GIS is mainly comprised of data handling tools for storage, retrieval, management and analysis of spatial data as well as solving complex geographical problems. GIS can also be used for the generation of new information by the user-defined combination of several existing information. Server and Client side Architecture There are two basic approaches for deploying GIS or any other complex, data-driven application on the Internet; those are server-side and client-side applications. In a server-side Internet GIS application, a Web browser is used to generate server requests and display the results. An Internet GIS server usually combines a standard Web (HTTP) server and a GIS application server, and the GIS databases and functionality reside completely on the server(s). A server-side GIS application can be illustrated by a mapping application on any of the major Internet portals. Users type in the address they are looking for (the request), which is transferred to a Web server. The Web server passes the request to a GIS application server, which runs an address matching routine, generates a map graphic, convert the graphic to Web format, wraps the image in HTML and sends it back to the Web server, which then returns the response to the client as a standard Web page Integration with Relational Database Management System (RDBMS) Databases are becoming an increasingly important feature of GIS and an increasingly valuable asset. Relational Database Management System (RDBMS) provides number of functions critical to the effective operation of a GIS and it is developed to manage and share data in an orderly manner and to ensure that the integrity of the database is maintained. Thus the value of user s data can be increased greatly by the use of a Relational Database Management System (RDBMS). RDBMS enables fast storage and retrieval of large amounts of information. |