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webgis lan

Contents of Training. WebGISLocal Area Network (LAN)TCP/IP. First what is GIS ?. A decision support system involving the integrationof spatially referenced data in a problem solving environment (Cowen, 1988). And what is WEB GIS ?A GIS that allows for the interactive diffusion and interaction with geographical data over the WEB.

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webgis lan

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    1. WebGIS&LAN Mapping & Networking for Today and Tomorrow By Rajesh Kumar ACCHO-II

    11. Architect of WebGIS

    25. GeoMedia WebMap GeoMedia WebMap Professional GeoMedia WebMap Publisher These are components of Intergraph’s Web-GIS software that perform the preparation of the database, server, web publishing of maps.

    26. Geomedia WebMap Features Intergraph GeoMedia WebMap invented Geographic Data Objects (GDO), which creates a separate GDO server for each GIS and CAD packages. Intergraph GeoMedia WebMap supports file formats from the following vendors: Oracle, AutoDesk, FRAMME, Microsoft Access, SQL, and ESRI file formats.

    27. Geomedia WebMap Features GeoMedia Web Map Professional is not all so different from the standard Web Map. It performs routing, geocoding and enabling remote access to the Database. It provides vector and raster viewing capabilities. It also performs rendering and manipulation in the browser. This is one of the advantages of the GeoMedia Web Map. It allows the user to click a feature and view the attributes of the feature.

    28. Geomedia WebMap Features GeoMedia Web Map Publisher allows the creation of web site without the need for programming. Server-Side Operations deliver geographic information to the end user through the client-side components Client-Side Operation include querying, editing and adding data into the database

    29. Application Areas of WebGIS for NHO Intranet/Internet WebGIS of Hydrographic Surveys and Cartographic Products. WebGIS NtoM-For N to M Query/Analysis Real Time Updation of Paper Charts/ENCs objects/Attributes by IN Ships while Surveying. Online Charts Proof Checking by Ports and Marine Authorities. Integration of Satellite Imagery Database with existing ENCs/Charts for real time decision and analysis during conduct of HIs. WebGIS Catalouge of Paper Charts and ENCs.

    30. LAN ( Local Area Networking) A LAN is a high-speed data network that covers a relatively small geographic area. It typically connects workstations, personal computers, printers, servers, and other devices. LANs offer computer users many advantages, including shared access to devices and applications, file exchange between connected users, and communication between users via electronic mail and other applications.

    31. LAN Devices NIC-Network Interphase Card Cables Hubs Switches Routers Gateways Reapeters

    33. How do Computers Communicate with each other when they don,t speak same Language PCs MAC Unix Servers NT Servers Novell Servers

    34. OSI MODEL FOR NETWORKING

    37. TCP/IP TCP/IP stands for “Transmission Control Protocol / Internet Protocol”. It is basically a network protocol that defines the details of how data is sent and received through network adapters, hubs, switches, routers and other network communications hardware. It was developed by the US department of defense for the purpose of connecting government computer systems to each other through a global, fault tolerant, network. The defense department network was opened up to research institutions and eventually the general public to create what is now the Internet. Because it is the primary protocol used on the Internet, and it is in the public domain, it has become the most popular networking protocol throughout the world and is therefore well supported by almost all computer systems and networking hardware

    38. Understanding TCP/IP TCP/IP allows any two machines to communicate directly. To permit this all hosts on a given network must have a unique IP address. IP addresses are administrated by one central organisation, the InterNIC. They give certain ranges of addresses (network-addresses) directly to sites which want to participate in the internet or to internet-providers, which give the addresses to their customers.

    39. TCP/IP uses 4-byte (32-bit) addresses in the current implementations (IPv4), also called IP-numbers (Internet-Protocol numbers), to address hosts. IP address use a dotted-decimal notation, while the computer converts this into binary. These sets of 32 bits are considered a single “entity” Understanding TCP/IP

    40. The structure containing two components: Network Identifier (Network ID): A certain number of bits, starting from the left-most bit, is used to identify the network where the host or other network interface is located. This is also sometimes called the network prefix or even just the prefix. Internet IP Address Structure

    42. Address Classes

    45. Class Ranges of Network IDs

    46. Class Ranges of Host IDs

    47. Future of Internet ? An IPv4 address is a 32 bit value, that's usually written in “dotted quad” representation, where each “quad” represents a byte value between 0 and 255, for example:127.0.0.1 This allows a theoretical number of 2³² or ~4 billion hosts to be connected on the internet today. Due to grouping, not all addresses are available today. IPv6 Is being thought for as new version has 128 bit available for addressing that mean 2¹²8 Bigger address space,Support for mobile devices and Built-in security

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